Delta Calc vs SimpleFrames
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Delta Calc
Quickly calculate percent changes, discounts, and financial gains without complex math. Solve for any of the three values in the percent change formula with an intuitive interface and fun animations.
- Calculate percent changes
- Solve for any variable in the formula
- Customizable decimal places
- Haptic feedback
- Fun animations
- Adjustable keyboard buttons
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A fast, easy, and fun-to-use percent change calculator. Now you can quickly calculate discounts, financial gains, and percent changes without having to use Excel, Google, or do the long math. Delta Calc can solve for any of the three values within the percent change formula. It solves for the a, b, or c value in the percent change formula ((b - a) / a) * 100 = c. Other features include: - Haptic feedback (can be disabled if desired) - Change the number of decimal places displayed in the result (from 0 to 10) - Fun animation when tapping the swap button (warning: could become addictive) - Delightful to tap number pad buttons - Enable and disable keyboard buttons Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy: https://deltacalc.app/privacy Support: https://deltacalc.app/support
SimpleFrames
This app helps users extract frames from videos and GIFs, convert videos to GIFs or Live Photos, and extract audio from videos. It offers batch processing and real-time previews for efficient content creation.
- Video frame extraction
- Video to GIF conversion
- GIF frame extraction
- Live Photo frame extraction
- Video to Live Photo conversion
- Audio extraction from videos
- Batch processing
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Simple Frame Extractor is an easy-to-use, cross-platform app that provides six carefully selected processing tools for content creators and everyday users. Core Features • Video Frame Extraction: Precisely capture any frame from a video, with batch export support in JPG format. • Video to GIF: Convert video clips into high-quality GIF animations, with adjustable frame rate. • GIF Frame Extraction: Extract individual frame images from GIF animations. • Live Photo Frame Extraction: Extract still images from Live Photos. • Video to Live Photo: Convert video clips into Live Photo format. • Audio Extraction: Extract audio files from videos, supporting multiple audio formats. Technical Advantages • Built with native iOS design language, supporting Dark Mode. • Hardware-accelerated processing ensures high efficiency and stability. • Batch processing support to handle multiple files at once. • Real-time preview for instant results. • Supports a wide range of import and export file formats. Whether you’re creating social media content, extracting video materials, or separating audio, Simple Frame Extractor provides a professional and reliable solution. User Agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: SimpleFrames at Free against Delta Calc's $0.99. SimpleFrames also leads on iOS requirement (15.6 vs 17.6). Delta Calc's advantage is update cadence (every 3 days vs every 2 months). On rating, ratings volume, ads and in-app purchases 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
SimpleFrames is free to download; Delta Calc costs $0.99 up front. Delta Calc sells 1 one-off in-app purchase and SimpleFrames sells 4 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for Delta Calc against 5.0 for SimpleFrames. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
Delta Calc ships an update every 3 days, SimpleFrames every 2 months. Both last shipped on October 30, 2026.
| Parameter | Delta Calc | SimpleFrames |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 5.0 (2 ratings) | 5.0 (1 ratings) |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 3 days — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 15.6 — better |
| Further details — not scored | ||
| Size | 2 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Stephen Coffey | 越 张 |
In-app purchases
Delta Calc
- Delta Calc Lifetime$9.99
SimpleFrames
- 简单抽帧周会员$0.997 Days
- 简单抽帧月会员$2.991 Month
- 简单抽帧年会员$17.991 Year
- 简单抽帧买断$29.99
