Rul3r vs Wallpaper Size
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Rul3r
This utility app provides a portable ruler for on-the-go measurements. It also includes a suite of additional tools like a protractor, spirit level, and various meters for diverse measurement needs.
- Portable ruler
- Protractor
- Spirit level
- Altimeter
- Decibel meter
- Plumb line
Read full descriptionHide full description
Did you ever want to measure the length of something but you had no ruler at hand? Rul3r was created exactly for situations like this, so that a portable ruler is always available to you on your phone, whenever you need it. What's more, Rul3r provides a lot more tools: * Protractor * Plumb Line * Spirit Level * Elevation, Air Pressure and Location meter * Decibel Meter * Ordinal Date Converter
Wallpaper Size
This app helps you optimize wallpaper images to fit your screen perfectly, ensuring icons and time don't obscure your chosen background. It offers various tools to adjust image size, add effects like blur, and overlay elements such as calendars or barcodes.
- Adjust image size
- Add background blur
- Overlay calendar and barcode
- Apply image filters
- Adjust brightness and contrast
- Add various visual effects
- Crop image
Read full descriptionHide full description
Make your own wallpaper from your photos. Adjust the composition and leave room for the clock and icons on your Lock Screen or Home Screen. PHOTO CONTROLS Move, resize and rotate your photo in either direction. Use precise adjustment buttons to fine-tune the layout. MAKE IT YOURS Choose a background color, adjust the background image and blur, and add a calendar or barcode to your design. SAVE AND SHARE Save the finished image to Photos or share it. The exported image does not include the editor controls or preview clock. Apply the saved image as your wallpaper using iOS wallpaper settings. SAVING OPTIONS Editing is available without a purchase. Complete an optional rewarded ad to unlock full-resolution saves for 15 minutes, or purchase permanent ad removal to save without rewarded ads. The ad-removal purchase is a one-time, non-consumable purchase. Existing customers can use Restore Purchases in Settings. The app interface supports English and Korean.
Screenshots
Verdict
The clearest difference is review sentiment: Wallpaper Size at 92% against Rul3r's 45%. Wallpaper Size also leads on update cadence (every 3 days vs every 2 months) and rating (4.8 vs 4.4). Rul3r's advantage is ratings volume (1.1K vs 22). On price, ads, in-app purchases and monetization model 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. Rul3r sells 1 one-off in-app purchase and Wallpaper Size sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Wallpaper Size holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: Rul3r has 1.1K ratings behind it against 22, so its average is the more settled of the two. Written reviews point the same way: 45% of Rul3r's written reviews are positive against 92% of Wallpaper Size's.
Rul3r ships an update every 2 months, Wallpaper Size every 3 days. The most recent releases landed on October 29, 2026 and November 1, 2026 respectively.
| Parameter | Rul3r | Wallpaper Size |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (1.1K ratings) | 4.8 (22 ratings) — better |
| Positive reviews | 44.8% of reviews | 92.5% of reviews — better |
| Number of ratings | 1.1K — better | 22 |
| Update frequency | Every 2 months | Every 3 days — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 7 MB | 55 MB |
| Age rating | 4+ | 4+ |
| Developer | YOYASOFT LLC | Kyung Hyun Park |
Customer experience
Rul3r
Wallpaper Size
In-app purchases
Rul3r
- Remove Ads$2.99
Wallpaper Size
- Erase Ads$7.99
