Slope Calc vs Face Blender.
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Slope Calc
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“Why is the size of Calculator each buttons same? “ “How order is the priority of Calculator button? “ “What type Calculator is designed ,According to this priority? “ From those point,I redesign Calculator. Calculator is for Calculation.Not for inputting number. Consequently, the most important button is NOT number buttons. The most important button is 4 arithmetical operation buttons. I design those 4 arithmetical operation button is bigger than 10 number buttons. I put those 4 buttons around number buttons(relative position). And if you incline your iPhone to the direction of top and bottom right and left , you can input 4 arithmetical operation. ・Future function additional plan Equal sign input by the gesture
Face Blender.
Easily blend faces from your photo library to create humorous or artistic mixtures. No advanced editing skills are required; simply select images, blend them, and share your creations. This app prioritizes user privacy by not collecting any face or image data.
- Create face mixtures
- Select photos from library
- Simple blending process
- Share creations
- No Photoshop skills needed
- Privacy focused
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Create stunning faces mixture in a simple few steps! Select photos from your Photos Library, Create funny faces of your family or friends... No need to be Photoshop expert, simply select photos blend and share! * This App does not collect any Face or image data.
Screenshots
Verdict
The clearest difference is price: Face Blender. at Free against Slope Calc's $0.99. Slope Calc's advantage is in-app purchases (none vs 1) and ads (none vs shown). On update cadence 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
Face Blender. is free to download; Slope Calc costs $0.99 up front. Face Blender. sells 1 one-off in-app purchase. Slope Calc asks for nothing beyond the download.
Slope Calc ships an update every 21 months, Face Blender. every 12 months. The most recent releases landed on November 10, 2026 and November 1, 2026 respectively.
| Parameter | Slope Calc | Face Blender. |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | — | 1.3 (42 ratings) — better |
| Positive reviews | — | 5.6% of reviews |
| Number of ratings | — | 42 — better |
| Update frequency | Every 21 months | Every 12 months — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 7.0 — better | 9.0 |
| Further details — not scored | ||
| Size | 1 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Yosuke Kurashima | Kobi Snir |
In-app purchases
Slope Calc
No in-app purchases
Face Blender.
- Remove Ads$19.99
Questions
Is Slope Calc free?
Is Face Blender. free?
Do Slope Calc or Face Blender. have ads?
Which is updated more often, Slope Calc or Face Blender.?
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