Updating
Dumpy Pro.
Released: 2026-03-24
© 2026 Jaydon Smith. All rights reserved.
Released: 2026-03-24
© 2026 Jaydon Smith. All rights reserved.
Description
Dumpy Pro — Digital Level Book
The level book that belongs on every surveyor's phone. Record, check, and export your field data without paper, without a laptop, and without losing anything.
LEVEL BOOK
Work exactly as you would on paper — but faster. Enter your Backsight, Intermediate Sights, and Foresight readings using the Height of Collimation method. Every HC and RL is calculated instantly as you type. A live closure check at the end of each run tells you whether your arithmetic passes in seconds, not minutes.
Change points are automatically detected when you move the instrument. Undo the last reading with a single tap if you mis-book. Export a professionally formatted PDF level book or a CSV spreadsheet to share with your engineer or client directly from the field.
SET-OUT
Enter a design RL and Dumpy Pro tells you exactly what staff reading to look for. No mental arithmetic, no pocket calculator. Import your design points from a CSV file — map the columns once and every peg is ready to go. Live Mode shows the cut or fill in real time for the point you're setting out, so you can work continuously without looking away. Staff readings update automatically if you re-level and enter a new HC. Export your set-out sheet as a PDF or CSV.
AS-BUILT SURVEY
Record actual RLs against design RLs and let the app assess every point against your tolerance. Import design data from CSV, or enter points manually. Points are flagged as pass, fail, or pending. Attach photos to any point directly from the field. Export a full as-built report as a PDF or CSV.
DRAINAGE
Set up a drainage run with a start invert level and a grade. Dumpy Pro calculates the design invert at every chainage you enter and compares it to your as-laid reading. The exact signed percentage to dial into your laser or machine — negative for falling, positive for rising — is displayed prominently on every run card. Export the full run as a CSV report.
SITE COMMS
Real-time two-way communication between instrument operator and staffman — works over Wi-Fi or a local hotspot, no mobile signal required. The operator sees live staff readings and calculated RLs; the staffman receives cut/fill instructions as each point is recorded.
TWO PEG TEST
Check your level's collimation accuracy on site before you start. Enter four staff readings and the app calculates the collimation error per 60 m — pass or fail — with a step-by-step guide built in.
ENGINEERING CALCULATOR
A quick-access calculator for common survey maths, available from any screen.
JOB FOLDERS
Keep your site organised. Create a job folder for each project and add as many level books, set-out files, and drainage runs as you need. All data auto-saves and is stored in the app's Documents folder — visible in the iOS Files app under On My iPhone › Dumpy Pro, survives app updates and reinstalls, and can be backed up or transferred at any time. Share a complete job with a colleague via AirDrop, Messages, or the Files app with one tap.
BUILT FOR THE FIELD
Dark and light mode — readable in any light condition
Imperial and metric — switch between metres and feet & inches in Settings; all readings, exports, and tolerances update throughout the app
Large numeric inputs designed for gloved hands
Keyboard dismiss button that moves to your dominant hand
Haptic feedback confirms every reading added
Fully offline — no account, no subscription, no internet required
Customisable reading labels (rename BS/IS/FS to match your company's notation)
Built-in help sheet on every screen
Built-in glossary covering RL, BS, IS, FS, HC, TBM, invert levels, closure, and more
Whether you're levelling for a building slab, setting out kerb lines, checking as-laid drainage falls, or verifying as-built levels, Dumpy Pro keeps up with you on site.
For professional reference use only. All results must be independently verified by a qualified engineer or surveyor before use on site.
What's New in Version 1.03
**Level Book Closure Fix** — the closure check and running misclose pill now correctly reflect whether the traverse is in progress or at rest. After recording a Foresight the closure block appears as normal; taking a new Backsight to continue the traverse immediately hides the closure block and misclose pill until the next Foresight is recorded. Previously the closure numbers remained on screen and updated with every new reading, which was misleading mid-traverse.
**Chainage Column** — a Chainage field has been added to every reading in the Level Book. Enter any label (e.g. CH100, 50.000, or a custom string) while booking a reading, edit it afterwards, and it appears in both the CSV and PDF exports as a dedicated column between Station and BS.
**Depth-to-Invert Calculator Strip** — the Engineering Calculator now includes a Depth / RL Check strip below the grade tool. Enter a Height of Collimation and use the display value as either a staff reading (to get the resulting RL) or a target RL (to get the required staff reading). Both interpretations give the same arithmetic result — HC minus the display value — so a single answer covers both use cases.
**Manhole Quick-Name Button** — a new MH button sits alongside the point-name field in the Level Book reading card. Tap it to open the Manhole Survey sheet, choose a survey type (Cover + Invert, Cover only, or Invert only), and type a manhole code once. The app automatically appends CL or IL to the point name and queues the paired reading so the next entry is pre-filled without any typing. A Series mode keeps the naming advancing through consecutive manholes (MH1, MH2, MH3 …) until you tap the × to stop. An amber badge below the point-name field shows the queued next name at all times.
**Auto Depth-to-Invert Note** — when an IL reading is recorded for a manhole that already has a CL entry with a known RL, the app automatically calculates the depth to invert and appends it to the IL entry's notes (e.g. "Depth: 1.234 m"). This appears in the CSV and PDF Remarks column with no extra input from the surveyor.
**Chainage Increment Buttons** — the Chainage field in the Level Book now has two quick-entry buttons. The Last button (amber) re-fills the previous chainage in one tap. The +N button (blue) applies a configurable increment to the last chainage and writes the result into the field automatically — tap to apply, hold to change the increment size. Common increments (1 m through 1000 m) are available as presets, with a custom entry field for any value.
**Change-Point Backsight Suggestion** — after recording a Foresight, the reading card automatically shows a green suggestion chip: "Use 'CP1' as change-point name". Tapping it pre-fills the point name and chainage from the previous Foresight so the Backsight on the new instrument setup is named consistently with the change point in the record. The chip disappears the moment you start typing your own name.
**Laser Level Mode** — enable ◎ Laser Level Mode when creating a new job file to work with a rotating laser level instead of an optical level. Enter your BM RL and the detector reading on the benchmark to set the Height of Collimation — no backsight needed. From there, just enter detector readings at each point to record RLs instantly. Set-Out and Drainage tabs update their required readings live as you type. Re-establish the HC at any time if you move the laser or change height. The level book hides the BS/IS/FS columns and shows a clean reading-only layout when Laser Level Mode is active.
**Import from Level Book** — on the As-Built tab, tap "From Level Book in This Job" to bring in surveyed levels from any level book in the same job. A preview sheet lists each level book alongside its recorded IS and FS points and their RLs — tap a file to expand the preview, then tap Import to load those levels straight into your as-built point list as design RLs, ready for comparison against as-built staff readings.
Information
Developer
Categories
Version
1.03
Size
9.2 MB
Game Center
No
VPP Device Licensing
Yes
Rating
Rated: 4+
Compatibility
iOS 17.0 or later
Devices
iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE, iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPhone XR, iPhone XS, iPhone XS Max, iPhone 11, iPhone 11 Pro, iPhone 11 Pro Max, iPhone SE (2nd generation), iPhone 12, iPhone 12 Pro, iPhone 12 Pro Max, iPhone 12 mini, iPhone 13, iPhone 13 Pro, iPhone 13 Pro Max, iPhone 13 mini, iPhone SE (3rd generation), iPhone 14, iPhone 14 Plus, iPhone 14 Pro, iPhone 14 Pro Max, iPhone 15, iPhone 15 Plus, iPhone 15 Pro, iPhone 15 Pro Max, iPhone 16, iPhone 16 Plus, iPhone 16 Pro, iPhone 16 Pro Max, iPhone 16e, iPhone 17, iPhone 17 Pro, iPhone 17 Pro Max, iPhone Air, iPhone 17e, iPad (5th Generation) Wi-Fi, iPad (5th Generation) Wi-Fi + Cellular, iPad (6th generation) Wi-Fi, iPad (6th generation) Wi-Fi + Cellular, iPad Pro, iPad Pro (Cellular), iPad Pro (9.7-inch), iPad Pro (9.7-inch) (Cellular), iPad Pro 12.9-inch (2nd generation), iPad Pro 12.9-inch (2nd generation) Wi-Fi + Cellular, iPad Pro (10.5-inch), iPad Pro (10.5-inch) Wi-Fi + Cellular, iPad Pro (11-inch), iPad Pro (11-inch) Wi-Fi + Cellular, iPad Pro 12.9-inch (3rd generation), iPad Pro 12.9-inch (3rd generation) Wi-Fi + Cellular, iPad Air, iPad Air (Cellular), iPad Air 2, iPad Air 2 (Cellular), iPad Air (3rd generation), iPad Air (3rd generation) Wi-Fi + Cellular, iPad mini Retina, iPad mini Retina (Cellular), iPad mini 3, iPad mini 3 (Cellular), iPad mini 4, iPad mini 4 (Cellular), iPad mini (5th Generation), iPad mini (5th Generation) Wi-Fi + Cellular, iPad (7th generation) Wi-Fi + Cellular, iPad Pro 11-inch (2nd generation), iPad Pro 11-inch (2nd generation) Wi-Fi + Cellular, iPad Pro 12.9-inch (4th generation), iPad Pro 12.9-inch (4th generation) Wi-Fi + Cellular, iPad Air (4th Generation) (Wi-Fi), iPad Air (4th Generation) (Wi-Fi + Cellular), iPad (8th generation) Wi-Fi, iPad (8th generation) Wi-Fi + Cellular, iPad Pro 11-inch (3rd generation), iPad Pro 11-inch (3rd generation) Wi-Fi + Cellular, iPad Pro 12.9-inch (5th Generation), iPad Pro 12.9-inch (5th Generation) Wi-Fi + Cellular, iPad (9th Generation), iPad (9th Generation) Wi-Fi + Cellular, iPad mini (6th Generation), iPad mini (6th Generation) Wi-Fi + Cellular, iPad Air (5th generation), iPad Air (5th generation) Wi-Fi + Cellular, iPad Pro 11-inch (4th generation), iPad Pro 11-inch (4th generation) Wi-Fi + Cellular, iPad Pro 12.9-inch (6th generation), iPad Pro 12.9-inch (6th generation) Wi-Fi + Cellular, iPad (10th generation), iPad (10th generation) Wi-Fi + Cellular, iPad Air 11-inch (M2) Wi-Fi, iPad Air 13-inch (M2) Wi-Fi, iPad Air 13-inch (M2) Wi-Fi + Cellular, iPad Pro 11-inch (M4) Wi-Fi, iPad Pro 11-inch (M4) Wi-Fi + Cellular, iPad Pro 13-inch (M4) Wi-Fi, iPad Pro 13-inch (M4) Wi-Fi + Cellular, iPad mini (A17 Pro) Wi-Fi, iPad mini (A17 Pro) Wi-Fi + Cellular, iPad (A16) Wi-Fi, iPad (A16) Wi-Fi + Cellular, iPad Air 11-inch (M3) Wi-Fi, iPad Air 11-inch (M3) Wi-Fi + Cellular, iPad Air 13-inch (M3) Wi-Fi, iPad Air 13-inch (M3) Wi-Fi + Cellular, iPad Pro 11-inch (M5) Wi-Fi, iPad Pro 11-inch (M5) Wi-Fi + Cellular, iPad Pro 13-inch (M5) Wi-Fi, iPad Pro 13-inch (M5) Wi-Fi + Cellular, iPad Air 11-inch (M4) Wi-Fi, iPad Air 11-inch (M4) Wi-Fi + Cellular, iPad Air 13-inch (M4) Wi-Fi, iPad Air 13-inch (M4) Wi-Fi + Cellular, iPod touch (6th Generation), iPod touch (7th generation)
Languages
English
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