Comparison

What Day?? vs TurtleBackup

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

Head to head
About

What Day??

Features
Read full description

Features: Check the day of the week for any date from 1800 to 2300. Easy and fun to use. Great for planning birthdays, events, and more. Download now and always know your days!

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

What Day??3 screens
TurtleBackup4 screens

Verdict

The call

The clearest difference is price: TurtleBackup at Free against What Day??'s $9.99. What Day??'s advantage is iOS requirement (14.0 vs 17.0.1). On update cadence, 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; What Day?? costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

What Day?? ships an update every 5 weeks, TurtleBackup every 3 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

Scorecard2 real differences · 8 level
What Day?? versus TurtleBackup: the parameters behind the verdict, then further details
ParameterWhat Day??TurtleBackup
Price$9.99Free — better
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 5 weeksEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.0 — better17.0.1
Further details — not scored
Size5 MB1 MB
Age rating4+4+
DeveloperPieter Yoshua NatanaelSERGEI SOKOLOV

In-app purchases

None

What Day??

No in-app purchases

None

TurtleBackup

No in-app purchases

Questions

Is What Day?? free?
What Day?? costs $9.99, with no in-app purchases.
Is TurtleBackup free?
TurtleBackup is free to download, with no in-app purchases.
Do What Day?? or TurtleBackup have ads?
Neither What Day?? nor TurtleBackup shows ads.
Which is updated more often, What Day?? or TurtleBackup?
What Day?? ships an update every 5 weeks, and TurtleBackup every 3 weeks. Most recently, What Day?? was updated on October 25, 2026 and TurtleBackup on October 24, 2026.

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