Slope Calculator vs LevelNote
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Slope Calculator
Calculate slope in angle, percentage, or ratio by inputting two sides of a right triangle. This intuitive and easy-to-use application provides the remaining necessary values.
- Calculate slope as angle
- Calculate slope as percentage
- Calculate slope as ratio
- Input two sides of a right triangle
- Calculate remaining triangle values
- Intuitive and easy to use
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Use this App to calculate slope (Angle, Percentage, Ratio). You just need to enter 2 of the 3 sides of a right triangle, we will calculate for you the remaining necessary numbers. This is a very intuitive App, simple and easy to use. Results are estimates for informational purposes only. We are very happy to serve you. If you have any requests, don't hesitate to contact us. - https://www.facebook.com/phan.nhatdang.3/ - phannhatd@gmail.com
LevelNote
This digital field book simplifies construction site leveling surveys. Measure elevations, perform set-outs, and manage all your survey records and benchmarks efficiently. Organize data by site for seamless team collaboration.
- Automated elevation calculations
- Set-out mode for target elevations
- Benchmark management and sharing
- Site organization for projects
- Survey record saving and CSV export
- Customizable columns for notes and offsets
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LevelNote is a digital field book for leveling on construction sites. With paper-like workflows, you can measure elevations, set out (marking), and manage records quickly. [Key Features] ■ Measurement Mode (Standard) Enter a benchmark (BM) and readings (BS / FS) to calculate instrument height (IH) and elevation (EL) automatically. • Benchmark setup: enter BM and BS • Point measurement: enter FS to calculate EL • Multiple benchmarks during a survey • Select from BM list (Pro): add a saved benchmark • Custom columns: memo and EL offset columns; adjusted EL is shown automatically • Delete points from the toolbar (the first benchmark cannot be deleted) • Custom numeric keypad and auto-focus to the next field • Floating calculator for basic arithmetic ■ Marking / Set-out Mode (Pro) Enter a target elevation (EL) to calculate the required reading (FS) automatically. • Enter target EL; IH and required FS are calculated • EL offset column: shows adjusted EL and updates required FS * Only one EL offset column can be added in Marking • Memo columns for per-point notes • Multiple benchmarks and BM list selection • Delete focused points from the toolbar • Same custom keypad and calculator as Measurement ■ Benchmark (BM) Management (Pro) Save benchmarks you reuse and call them up in Measurement or Marking. • Create / edit name, elevation (EL), photo, and notes • List view and pick-from-list when adding a benchmark • Share benchmarks as files with your team * Recipients need Pro / LevelNote v1.6.0 or later • Import from the Benchmarks screen, or open a shared file in LevelNote ■ Site Management Organize survey records and benchmarks (BM) by site. • Switch sites: create, switch, edit, and delete sites from the top left of Home • Auto-assign: newly saved records and BMs go to the current site • No site selected: data saved without a site stays in "No site selected" • Existing data: records and BMs saved before this feature remain in "No site selected". You can move them to a site later • Limits: Free includes 1 site. Pro includes unlimited sites * Switching sites, using "No site selected", and moving records are available on Free ■ Survey Records Save Measurement and Marking data and review it anytime. • Save records (name when leaving; blank names use a date default) • List: name, date, point count, and mode • Detail table including custom columns; resume to continue editing • Swipe to delete; Select for bulk CSV share or delete • CSV export from detail or bulk selection (includes memo / EL offset headers) Share to Files, Mail, and more—useful for Excel and submissions [About Pro] Pro unlocks Marking / set-out, Benchmark management (create, manage, share, import), and multiple sites (Free includes 1 site). Available as a monthly subscription or a one-time purchase (no expiration). Subscriptions are charged to your Apple ID and renew automatically unless auto-renew is turned off at least 24 hours before the period ends. Manage or cancel in Settings > Apple ID. Use Restore Purchases if you already bought Pro. [Highlights] • Fully offline—works in tunnels and low-signal sites • Auto calculation of IH, EL, and required FS • Custom columns for memos and EL offsets • Simple, one-handed UI for the field • Digital storage—no lost or damaged paper books • Leveling-focused numeric keypad • Japanese and English UI • Requires iOS 17.0 or later [Data] • Survey data is stored only on your device. • No cloud sync. Deleting the app deletes all saved data. • Back up important data regularly. [Who It’s For] • Leveling on construction sites • Site and quality managers • Teams moving from paper field books to digital • Anyone reducing transcription mistakes • Anyone needing memos or offsets in the field book • Teams that share benchmarks (BM) Make leveling simpler and faster with LevelNote. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: LevelNote at every 2 weeks against Slope Calculator's every 14 months. LevelNote also leads on review sentiment (75% vs 58%). Slope Calculator's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Slope Calculator sells 1 one-off in-app purchase and LevelNote sells 2 in-app purchases, starting at $0.49 per month. Whichever you choose, the download price is not the number that matters.
Slope Calculator ships an update every 14 months, LevelNote every 2 weeks. The most recent releases landed on November 7, 2026 and November 9, 2026 respectively.
| Parameter | Slope Calculator | LevelNote |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (105 ratings) — better | — |
| Positive reviews | 58.3% of reviews | 75.0% of reviews — better |
| Number of ratings | 105 — better | — |
| Update frequency | Every 14 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 5 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Phan Nhat Đang | Tadahiro Inoue |
Customer experience
Slope Calculator
LevelNote
In-app purchases
Slope Calculator
- Remove ads$1.99
LevelNote
- LevelNote Pro$0.491 Month
- LevelNote$19.99
Questions
Is Slope Calculator free?
Is LevelNote free?
Do Slope Calculator or LevelNote have ads?
Which is updated more often, Slope Calculator or LevelNote?
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