Comparison

Text Calculator vs Safety Note+

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

Head to head
About

Text Calculator

Enter mathematical formulas as text and get instant results. Review past calculations with a history feature for error checking and reuse. Supports advanced functions and constants, and can email your calculation history.

Highlights
  • Text-based formula input
  • Calculation history
  • Reuse past calculations
  • Email history
  • Advanced functions and constants
  • iPad split screen support
Features
Read full description

This is a full text calculator. Just enter your formula in the text box and tap the '=' button (or 'Return' on the keyboard). It keeps a history of your calculations. This way you can check for typos and errors in your calculations. Features: - Just tap the result or formula in the history to reuse it. - Email the history for backup or further processing - You can use the Google calculator as well (e.g. for unit conversions). - Available functions: sin, cos, tan, asin, acos, atan, sqrt, exp, log, pow, abs, round, ceil, floor, random - Available constants: PI, E, LN2, LN10, LOG2E, LOG10E, SQRT2, SQRT1_2 - iPad split screen support - Support iPhone 6 and 6+

About

Safety Note+

Secure your private notes with advanced protection. This app offers passcode, biometric, and decoy password options to prevent unauthorized access. Organize, back up, and share your sensitive information with peace of mind.

Highlights
  • Advanced security system
  • Passcode protection
  • Biometric support (TouchID/FaceID)
  • Intruder report with photos
  • Decoy password
  • Folder-specific passcode locking
  • Note organization and backup
Features
Read full description

Some notes are too personal for a regular notes app. Safety Note+ gives you a dedicated private space for personal writing, sensitive lists and ideas you want to keep separate. Unlock quickly with Face ID, Touch ID or a passcode, organize notes in folders, and choose optional sync or backup when you need it. PRIVATE ACCESS • Protect the app with a passcode or supported biometric unlock • Choose PIN, password or pattern-style access where available • Return to your notes quickly without mixing them with everyday notes DECOY AND INTRUDER FEATURES • Set a decoy password that opens alternate content • Review supported intruder reports after failed unlock attempts • Enable only the privacy features that fit your needs FOLDER-LEVEL PROTECTION • Add separate protection to selected folders • Keep personal, journal, work and other private notes organized • Use folder colors and icons to find important content faster WRITE AND ORGANIZE • Create short notes, long-form writing and private lists • Search, sort, move and copy notes • Auto-save helps preserve changes as you write • Choose from available themes SYNC, BACKUP AND DEVICE CHANGES • Keep notes on your device for a local-first workflow • Enable iCloud Sync on supported Apple devices • Use optional Cloud Backup when available • Check your backup before changing devices or deleting the app PRIVACY YOU CAN UNDERSTAND Face ID and Touch ID are handled by Apple. Safety Note+ does not receive or store your biometric face or fingerprint data. Sync and backup are optional and depend on the services you enable. Safety Note+ is designed for private notes, personal journals, sensitive lists, confidential ideas and information you prefer to keep separate from a regular notes app. Some features require an in-app purchase or subscription. Feature availability may vary by device, operating-system version and region. Visit us at: Website: https://sixbytes.io Twitter: https://twitter.com/SixbytesApp Facebook: https://www.facebook.com/sixbytesapp For more information, please refer to our Terms of Service and Privacy Policy: Terms of service: https://sixbytes.io/products/safety-note/legal/terms Privacy policy: https://sixbytes.io/products/safety-note/legal/privacy-policy

Screenshots

Text Calculator4 screens
Safety Note+4 screens

Verdict

The call

The clearest difference is price: Safety Note+ at Free against Text Calculator's $0.99. Safety Note+ also leads on rating (4.8 vs 2.0) and update cadence (fortnightly vs every 18 months). Text Calculator's advantage is in-app purchases (none vs 7) and iOS requirement (12.0 vs 15.0). On ads, monetization model and device support 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

Safety Note+ is free to download; Text Calculator costs $0.99 up front. Safety Note+ sells 7 in-app purchases, starting at $0.99 per month. Text Calculator asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Safety Note+ holds the better App Store score, 4.8 against 2.0. That said, the two scores are not equally well evidenced: Safety Note+ has 663 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 50% of Text Calculator's written reviews are positive against 76% of Safety Note+'s.

UpkeepUpdate frequency

Text Calculator ships an update every 18 months, Safety Note+ fortnightly. The most recent releases landed on October 7, 2026 and October 22, 2026 respectively.

Scorecard7 real differences · 3 level
Text Calculator versus Safety Note+: the parameters behind the verdict, then further details
ParameterText CalculatorSafety Note+
Price$0.99Free — better
Rating2.0 (3 ratings)4.8 (663 ratings) — better
Positive reviews50.0% of reviews75.8% of reviews — better
Number of ratings3663 — better
Update frequencyEvery 18 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size1 MB79 MB
Age rating4+4+
DeveloperPiet JonasEightythree Technology

Customer experience

Text Calculator

All ratings3 ratings
Positive0.0%
Neutral33.3%
Negative66.7%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Safety Note+

All ratings662 ratings
Positive95.8%
Neutral2.0%
Negative2.3%
Written reviews190 reviews
Positive75.8%
Neutral4.7%
Negative19.5%

Bugs and requests

Text Calculator

Not enough reviews yet to summarise bugs or requests.

Safety Note+

Reported bugs

4 issues
  • Inability to set non-numeric PIN
  • Sluggish performance with long notes
  • Losing notes after updates
  • Syncing issues across devices

Requested features

4 requests
  • Add search within notes
  • Allow customization of themes and fonts
  • Improve note editing capabilities
  • Provide backup and restore options

In-app purchases

None

Text Calculator

No in-app purchases

7 purchases

Safety Note+

Subscriptions4
  • iCloud Sync Monthly$0.991 Month
  • Cloud Backup Monthly$1.491 Month
  • iCloud Sync Yearly$6.991 Year
Show 1 more
  • Cloud Backup Yearly$8.991 Year
One-time3
  • Reset Password$1.99
  • Upgrade to Full Version$3.99
  • iCloud Sync Lifetime$49.99

Questions

Is Text Calculator free?
Text Calculator costs $0.99, with no in-app purchases.
Is Safety Note+ free?
Safety Note+ is free to download, with in-app purchases available.
Which has better reviews, Text Calculator or Safety Note+?
Safety Note+ is rated higher. Text Calculator averages 2.0 out of 5 from 3 ratings, while Safety Note+ averages 4.8 from 663 ratings.
Do Text Calculator or Safety Note+ have ads?
Neither Text Calculator nor Safety Note+ shows ads.
Which is updated more often, Text Calculator or Safety Note+?
Text Calculator ships an update every 18 months, and Safety Note+ fortnightly. Most recently, Text Calculator was updated on October 7, 2026 and Safety Note+ on October 22, 2026.

Other comparisons