Comparison

Level gauge vs Onehand Booknotes

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Level gauge

This intuitive tool allows you to measure angles and levels in multiple orientations. It offers high precision with smooth movement and includes calibration and hold functions for stable readings. Customize its appearance while enjoying its powerful yet simple design.

Highlights
  • Measure horizontal, vertical, and flat angles
  • High precision measurements
  • Smooth and stable readings
  • Calibration function
  • Hold function
  • Customizable appearance
Features
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With this simple, easy to use, and intuitive level, Measure levels in various orientations, and slope angles too. - Moves smoothly - High precision - Measure various angles horizontally, vertically, and when placed flat - Equipped with calibration and hold functions - Measurement is stable - Choose the appearance - Even though it is so powerful, the simple design is intuitive and easy to use If you think this level is better than others, please be sure to write a comment.

About

Onehand Booknotes

Features
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It quickly summarizes from books and captures paper notes via barcode registration or OCR. Its quiet UI preserves mental space, transforming daily insights into tangible assets by capturing fleeting thoughts and flashes of inspiration. “Recommended for” - Businesspeople who want to quickly digitize documents - Working professionals and students who want to take reading notes efficiently - Creators seeking inspiration for ideas - Students preparing for exams who want to manage study notes on their smartphones “Features” - High-Precision OCR Recognition - Automatically detects Japanese vertical/horizontal writing - High-accuracy text conversion using cutting-edge character recognition technology - Supports a wide range of materials: books, magazines, even handwritten notes Organization Features - Automatically retrieve book information via barcode scanning - Freely categorize notes using categories and tags - Manage web pages together by saving URLs - Supports multiple images (attach multiple photos to one note) iCloud Backup (Premium) - Safely back up all data - Share data across multiple devices - Export/import in JSON format

Screenshots

Level gauge2 screens
Onehand Booknotes4 screens

Verdict

The call

The clearest difference is in-app purchases: Level gauge at none against Onehand Booknotes's 2. Level gauge also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.6). Onehand Booknotes's advantage is update cadence (weekly vs every 9 months). On price and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Onehand Booknotes sells 2 in-app purchases, starting at $3.99 per month. Level gauge asks for nothing beyond the download.

UpkeepUpdate frequency

Level gauge ships an update every 9 months, Onehand Booknotes weekly. The most recent releases landed on September 29, 2026 and October 8, 2026 respectively.

Scorecard4 real differences · 6 level
Level gauge versus Onehand Booknotes: the parameters behind the verdict, then further details
ParameterLevel gaugeOnehand Booknotes
PriceFreeFree
Rating4.6 (12 ratings) — better—
Positive reviews93.6% of reviews—
Number of ratings12 — better—
Update frequencyEvery 9 monthsWeekly — better
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better17.6
Further details — not scored
Size16 MB5 MB
Age rating4+4+
DeveloperTatsukiNaoto Sato

In-app purchases

None

Level gauge

No in-app purchases

2 purchases

Onehand Booknotes

Subscriptions2
  • Monthly_Premium$3.991 Month
  • Yearly_Premium$29.991 Year

Questions

Is Level gauge free?
Level gauge is free to download, with no in-app purchases.
Is Onehand Booknotes free?
Onehand Booknotes is free to download, with in-app purchases available.
Do Level gauge or Onehand Booknotes have ads?
Both Level gauge and Onehand Booknotes show ads.
Which is updated more often, Level gauge or Onehand Booknotes?
Level gauge ships an update every 9 months, and Onehand Booknotes weekly. Most recently, Level gauge was updated on September 29, 2026 and Onehand Booknotes on October 8, 2026.

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