Comparison

OmniCalc vs FormatX

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Scrollable operation history
  • Instant result updates
  • Date math functions
  • Custom conversion calculators
  • Save formulas and history
  • Standard, Scientific, Statistical modes
Features
Read full description

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

About

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.

Highlights
  • Video format conversion
  • Audio format conversion
  • Image format conversion
  • Audio extraction from video
  • Video compression
  • Video and audio editing
  • GIF creation from video
Features
Read full description

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

OmniCalc3 screens
FormatX4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 7 level
OmniCalc versus FormatX: the parameters behind the verdict, then further details
ParameterOmniCalcFormatX
PriceFreeFree
Rating4.6 (90 ratings) — better4.6 (10 ratings)
Positive reviews71.9% of reviews—
Number of ratings90 — better10
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better17.0
Further details — not scored
Size2 MB94 MB
Age rating4+4+
DeveloperJellyfilled Studios阳 刘

Customer experience

OmniCalc

All ratings72 ratings
Positive91.7%
Neutral5.6%
Negative2.8%
Written reviews32 reviews
Positive71.9%
Neutral9.4%
Negative18.8%

FormatX

All ratings10 ratings
Positive90.0%
Neutral0.0%
Negative10.0%

In-app purchases

None

OmniCalc

No in-app purchases

3 purchases

FormatX

Subscriptions3
  • 1 Week$0.297 Days
  • 1 Month$0.991 Month
  • 1 Year3 Days trial$9.991 Year

Questions

Is OmniCalc free?
OmniCalc is free to download, with no in-app purchases.
Is FormatX free?
FormatX is free to download, with in-app purchases available.
Which has better reviews, OmniCalc or FormatX?
OmniCalc is rated higher. OmniCalc averages 4.6 out of 5 from 90 ratings, while FormatX averages 4.6 from 10 ratings.
Do OmniCalc or FormatX have ads?
Neither OmniCalc nor FormatX shows ads.
Which is updated more often, OmniCalc or FormatX?
OmniCalc ships an update every 2 months, and FormatX every 2 months. Most recently, OmniCalc was updated on October 20, 2026 and FormatX on October 24, 2026.

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