Comparison

Metric Converters vs TurtleBackup

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

Head to head
About

Metric Converters

Features
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This is the Converter Maniacs Mobile Metric Converter. It can convert between twenty different metric prefixes: Yotta, Zetta, Exa, Peta, Tera, Giga, Mega, Kilo, Hecto, Deka, Deci, Centi, Milli, Micro, Nano, Pico, Femto, Atto, Zepto, and Yocto. Not only can it convert between all of those prefixes, but it will also give you the formula and illustrate what you are converting with pictures. The app is fast, intuitive, and easy to use. It is a standalone app, which means that it will work perfectly fine in places with little or no Internet access. We hope this will become one of your favorite utility apps on your phone.

About

TurtleBackup

This utility app allows you to back up files from memory cards to external drives or internal storage, ideal for travelers. It offers options for folder structure, file filtering, and incremental backups, ensuring data integrity and easy review of backup history.

Highlights
  • Backup memory cards to external drives or internal storage
  • Organize backups by original structure, date, or date/type
  • Filter files by creation date
  • Incremental backup support
  • Integrity check with checksum comparison
  • Backup history log
Features
Read full description

Easily backup files from memory cards to external drive (like USB flash drive) or to internal storage. Combined with a compatible USB hub / card reader, it’s a simple and lightweight photo backup solution for travel / short trips.  Has 4 main features: Check, Backup, Integrity check, History.  "Check" gives a brief overview / size estimate, and also confirms whether basic conditions (e.g. available space) are met.  "Backup" copies files from source to destination. You have 3 options regarding folder structure on destination: • use original (same as source) folder structure • group files into folders by file creation date (YYYY-MM-DD, example: 2026-02-10/DSC_5555.JPG) or • group files by file creation date and type (YYYY-MM-DD/type, example: 2026-02-10/JPG/DSC_5555.JPG) There's also a filter feature - you can exclude files created before certain date (e.g. if you want to skip files created before the trip, but don't want to delete them from source). Incremental backup is supported as well - matching existing files are skipped, if size (and file creation time, depending on selected setting) is the same. Also, if you're using same backup source / destination each time, app will remember and pre-select them on startup, so in ideal scenario, backup can be performed just by clicking couple of buttons. "Integrity check" is optional, compares checksums of corresponding files from source folder to the ones in the destination folder. "History" is optional (can be enabled via settings) - saves (locally) basic statistics (date, number of files, etc.) about performed backups, which you can review later. App doesn't need a network connection and does not support backup to network locations (cloud etc.).

Screenshots

Metric Converters4 screens
TurtleBackup4 screens

Verdict

The call

The clearest difference is price: TurtleBackup at Free against Metric Converters's $0.99. TurtleBackup also leads on update cadence (every 3 weeks vs every 38 months). Metric Converters's advantage is iOS requirement (14.1 vs 17.0.1). On ads, in-app purchases 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

TurtleBackup is free to download; Metric Converters costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Metric Converters ships an update every 38 months, TurtleBackup every 3 weeks. The most recent releases landed on September 24, 2026 and September 26, 2026 respectively.

Scorecard3 real differences · 7 level
Metric Converters versus TurtleBackup: the parameters behind the verdict, then further details
ParameterMetric ConvertersTurtleBackup
Price$0.99Free — better
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 38 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.1 — better17.0.1
Further details — not scored
Size20 MB1 MB
Age rating+44+
DeveloperH ValeurSERGEI SOKOLOV

In-app purchases

None

Metric Converters

No in-app purchases

None

TurtleBackup

No in-app purchases

Questions

Is Metric Converters free?
Metric Converters costs $0.99, with no in-app purchases.
Is TurtleBackup free?
TurtleBackup is free to download, with no in-app purchases.
Do Metric Converters or TurtleBackup have ads?
Neither Metric Converters nor TurtleBackup shows ads.
Which is updated more often, Metric Converters or TurtleBackup?
Metric Converters ships an update every 38 months, and TurtleBackup every 3 weeks. Most recently, Metric Converters was updated on September 24, 2026 and TurtleBackup on September 26, 2026.

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