Formula Conversion vs iRelativity
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Formula Conversion
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It is a formula conversion application. You can print a formula or a modified formula. You can save unmodified formulas to your phone's storage medium and then open it if necessary. Upgrading An application without an upgrade is limited to 24 formula conversions. If you want to convert the formula more than ten times, you must make an in-app purchase. Creating and opening a formula You can open the formula by clicking the first button on the toolbar. You can create a new formula using the symbols, symbols, numbers, and letters on the keyboard. You can change the font size of letters and symbols by pressing the "alp." Or "ALP." And "sym." Or "SYM." Buttons on the toolbar. If you wish, you can delete the characters by pressing the "del." Key. And use the arrows to move between the elements of the formula. Formatting the formula You can format the formula by first selecting the characters you want to change. The selection key is "Sel.", And you can then select by scrolling between the elements of the formula or by pressing the finger on the desired character. You can format the selected formula by pressing the second button on the toolbar from the back. You can change the font, font size, font, and font color Saving and printing the sample You can save the formula by pressing another button on the toolbar. Press the third button on the toolbar to print. If you want to delete the saved formulas, press the fourth button on the toolbar. Converting a formula When the formula is ready, you can publish parts of the formula. To publish part of a formula, select the item with the cursor. Press the fifth button on the toolbar to publish the formula. You can also print the converted formula by clicking the "Print" button. Zoom a formula If you want to increase or decrease the formula, press the third button on the back of the toolbar.
iRelativity
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Every time you move, time passes slightly slower for you than for someone standing still. That's not science fiction โ it's special relativity, and it's happening to you right now. iRelativity uses your real GPS speed to calculate exactly how much time dilation you're experiencing. Every trip, every commute, every flight adds a tiny slice of time to your lifetime total. The faster you travel, the more you save. Features โข Live time dilation โ your phone's GPS feeds real velocity into the Lorentz equation in real time โข Lifetime total โ watch your accumulated time saved grow across every journey, displayed in the most readable unit from femtoseconds up to seconds โข Daily history โ a chart of how much time you've saved each day โข Global leaderboard โ compare your lifetime total with other travellers via Game Center โข What-if simulator โ drag a slider toward the speed of light and see what time dilation would feel like at 0.9 c โข Learn tab โ interactive animations of the light clock and Einstein's train thought experiment, with a Lorentz factor calculator The numbers are real. At highway speeds you save about a nanosecond per hour. Board a plane and that climbs to microseconds. The physics is identical to the corrections that keep GPS satellites accurate every day.
Screenshots
Verdict
The clearest difference is in-app purchases: iRelativity at none against Formula Conversion's 1. Formula Conversion's advantage is iOS requirement (14.1 vs 18.6). On price, ads and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Formula Conversion sells 1 one-off in-app purchase. iRelativity asks for nothing beyond the download.
| Parameter | Formula Conversion | iRelativity |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 26 months | โ |
| Ads | No | No |
| In-app purchases | Yes | No โ better |
| Devices | iPhone, iPad, iPod โ better | iPhone, iPad |
| Requires iOS | 14.1 โ better | 18.6 |
| Further details โ not scored | ||
| Size | 2 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Janek Soomets | Vladimir Kostadinov Stoyanov |
In-app purchases
Formula Conversion
- Upgrade Formula Conversion$3.99
iRelativity
No in-app purchases
Questions
Is Formula Conversion free?
Is iRelativity free?
Do Formula Conversion or iRelativity have ads?
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