Solves vs Efficient Gallery
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Solves
A powerful and versatile calculator for all your Apple devices. Edit complex expressions, sync history across devices, and enjoy a clean, ad-free experience. Unlock advanced features like unit conversion and fraction support with an optional upgrade.
- Edit expressions without limitations
- Instant results
- Sync calculation history across devices
- Unit conversion (currencies, physical units)
- Fraction support
- Customizable themes
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Solves is a well-made calculator app for your iPhone, iPad, Mac, and Apple Watch. It allows you to edit expressions without limitations and get instant results. It keeps your calculation history in sync on all devices and lets you to easily interact with it. All this for free and without ads! By purchasing Solves+ you also get: • Unit Conversions: currencies (with crypto, metals & energy), physical units, and your own! • History Tools: comment, bookmark, export, auto clear, and more • Fractions • More Themes • Advanced Settings Hand-typed code. No generative AI was used during the development or by the app itself. Solves+ requires one payment only. You will own it forever on all devices.
Efficient Gallery
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Efficient Gallery helps you clean up your camera roll quickly and intentionally. Swipe through your photos in a randomly shuffled stream: • Swipe right to keep photos you want • Swipe left to send photos to a delete bucket • Review everything before deleting so nothing is removed by accident Efficient Gallery is designed to be simple, fast, and distraction-free. No accounts. No ads. No clutter. Your photos stay on your device, and nothing is deleted without your confirmation.
Screenshots
Verdict
The clearest difference is in-app purchases: Efficient Gallery at none against Solves's 6. Solves's advantage is device support (5 vs 2) and iOS requirement (15 vs 26.2). 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
Both are free to download. Solves sells 6 one-off in-app purchases. Efficient Gallery asks for nothing beyond the download.
| Parameter | Solves | Efficient Gallery |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (381 ratings) — better | — |
| Positive reviews | 90.6% of reviews | — |
| Number of ratings | 381 — better | — |
| Update frequency | Every 3 weeks | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod, Mac, Apple Watch — better | iPhone, iPad |
| Requires iOS | 15 — better | 26.2 |
| Further details — not scored | ||
| Size | 82 MB | 0 MB |
| Age rating | 4+ | 4+ |
| Developer | Oleg Barinov | Efficient Saul |
Bugs and requests
Solves
Reported bugs
4 issues- Crashes when pressing certain buttons
- Issues with parsing complex expressions
- Incorrect results for some calculations
- Problems with history clearing or syncing
Requested features
6 requests- Add support for fractions and mixed numbers
- Implement a widget for quick access
- Allow resizing the app window on Mac
- Provide more customization options
- Add support for Apple Watch
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- Improve unit conversion experience
Efficient Gallery
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Solves
- Tip Option #1$0.99
- Tip Option #2$1.99
- Tip Option #3$4.99
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- Tip Option #4$9.99
- Solves+$9.99
- Tip Option #5$19.99
Efficient Gallery
No in-app purchases
Questions
Is Solves free?
Is Efficient Gallery free?
Do Solves or Efficient Gallery have ads?
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