OmniCalc vs FormatX
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OmniCalc
This app offers a versatile calculator with a scrollable history for easy editing and instant results. It features date math, custom conversion calculators, and a personal math library for saving formulas and operations. Supports standard, scientific, and statistical calculations.
- Scrollable operation history
- Instant result updates
- Date math functions
- Custom conversion calculators
- Save formulas and history
- Standard, Scientific, Statistical modes
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Easy to use calculator that lets you scroll through your operations and make changes with instant results. Includes date math functions to easily add or subtract dates from each other. You can also add or subtract days from any date. • Rotate the iPhone/iPad to instantly swap between different calculators. • Annotate and save a series of operations to create your own conversion calculators. • Save formulas or operation history in your own math library. • Date Math is automatically detected in normal operations. Add or subtract dates from each other, add or subtract a number from any date. Includes: • Standard Calculator Functions • Scientific Calculator Functions • Statistical Calculator Functions • Date Math Calculator Functions
FormatX
This app is a comprehensive tool for converting and editing video, audio, and image files. It offers features like compression, extraction, merging, and format adjustments for a wide range of media types.
- Video format conversion
- Audio format conversion
- Image format conversion
- Audio extraction from video
- Video compression
- Video and audio editing
- GIF creation from video
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FormatX is an all-in-one format conversion tool that supports video, audio, and image format conversions, audio extraction, compression, cropping, merging, speed adjustment, rotation, aspect ratio adjustment, volume control, and more. Easily convert everything you want... FormatX has the following main features: Video Format Conversion: Supports conversion of videos in various formats with the freedom to customize settings like resolution, bitrate, frame rate, etc. Supported formats include mp4, mov, mkv, mpg, amv, ts, mpeg, m4v, wmv, asf, avi, vob, flv, etc. Audio Format Conversion: Professional audio format conversion settings to maintain the original audio quality. Supported formats include wav, mp3, aac, m4a, flac, etc. Image Format Conversion: Supports various image format conversions with the freedom to modify resolution and ratio. Supported formats include jpg, png, heic, jpeg, etc. Audio Extraction: Extracts various audio formats from videos with simple and convenient operations, maintaining the original sound sampling rate, bitrate, and supporting features like fade in and fade out. Video Compression: Supports limitless compression from 1% to 100%, compatible with multiple video formats. Video Editing: Features video cropping, merging, rotation, speed adjustment, volume control, and video denoising. Audio Editing: Supports audio cropping, merging, speed adjustment, volume control, and audio denoising. GIF Processing: Converts videos of various formats into high-definition GIFs, allowing personalized creation of desired GIFs. Subscription Auto-Renewal Instructions: -- Subscription Period: 1 week, 1 month, 1 year -- Subscription Price: Check iAP application information for details. -- Payment: Purchase confirmation and payment will be recorded in the iTunes account. -- Renewal: Apple iTunes account will be charged 24 hours before expiration, and the subscription period will be extended for one subscription cycle after successful payment. -- Cancel Renewal: To cancel the renewal, manually turn off the auto-renewal function in iTunes/Apple ID settings management at least 24 hours before the current subscription period is charged. -- Terms of Use: https://formatx-app.notion.site/formatx-app/Terms-of-use-37aaafcaef794d2d96c659595f243ac6 -- Privacy Policy: https://formatx-app.notion.site/formatx-app/Privacy-Policy-6920b3b28f944b60a977dc770b6c4c99
Screenshots
Verdict
The clearest difference is in-app purchases: OmniCalc at none against FormatX's 3. OmniCalc also leads on ratings volume (90 vs 10) and iOS requirement (13.0 vs 17.0). On price, rating, update cadence 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. FormatX sells 3 in-app purchases, starting at $0.29 per 7 days. OmniCalc asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.6 for OmniCalc against 4.6 for FormatX. That said, the two scores are not equally well evidenced: OmniCalc has 90 ratings behind it against 10, so its average is the more settled of the two.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.
| Parameter | OmniCalc | FormatX |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (90 ratings) — better | 4.6 (10 ratings) |
| Positive reviews | 71.9% of reviews | — |
| Number of ratings | 90 — better | 10 |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 2 MB | 94 MB |
| Age rating | 4+ | 4+ |
| Developer | Jellyfilled Studios | 阳 刘 |
Customer experience
OmniCalc
FormatX
In-app purchases
OmniCalc
No in-app purchases
FormatX
- 1 Week$0.297 Days
- 1 Month$0.991 Month
- 1 Year3 Days trial$9.991 Year









