Formula Box (LaTeX) vs Donate Water
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Formula Box (LaTeX)
Input known values into any formula and this app will solve for the missing variable. It offers a library of pre-built formulas across various scientific and financial fields, along with the ability to save and share your own.
- Solve for any blank variable
- Supports typed or pasted formulas (including LaTeX)
- Pre-built formula library
- Save and share custom formulas
- Simplify fractions, roots, and powers
- Adjust decimal place precision
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Leave one variable blank, and FormulaBox solves for it. Type any formula, fill in the numbers you know, and the blank one is worked out: the exact answer where there is one, and its decimal value. • Any formula, typed or pasted: use the math keyboard, or paste LaTeX. No LaTeX needed. • A library ready to use: mathematics, statistics, physics, finance, chemistry, construction, queueing theory, atomic and nuclear physics. Pick a formula and compute. • Constants already in: the speed of light and others are filled in, so you enter only the rest. • Simplify in one step: fractions, roots and powers made simple. • Your own formula box: save the formulas you use, with tags and notes, and share them as a link, LaTeX or a picture. • Two pages on big screens: on iPad and iPhone Duo, the formula on one page, the answer on the other. • Choose how many decimal places in Settings. The app shows ads.
Donate Water
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We are building a world where everyone will have access to potable and clean water all seasons. Join us today, earn rewards to spend and shop all over the world. In DonateWater you help to document water sources to drive the change needed to give everyone a chance against climate change in Nigeria and Africa: 1. Go to a water source and start a new survey. 2. Fill out the survey. 3. Upload the survey and earn rewards.
Screenshots
Verdict
The clearest difference is ads: Donate Water at none against Formula Box (LaTeX)'s shown. Donate Water also leads on update cadence (every 3 months vs every 8 months) and iOS requirement (12.0 vs 15.0). On price, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Formula Box (LaTeX) ships an update every 8 months, Donate Water every 3 months. The most recent releases landed on November 11, 2026 and November 7, 2026 respectively.
| Parameter | Formula Box (LaTeX) | Donate Water |
|---|---|---|
| Price | Free | Free |
| Rating | 1.3 (3 ratings) — better | — |
| Positive reviews | 42.9% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 8 months | Every 3 months — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 11 MB | 87 MB |
| Age rating | 4+ | 4+ |
| Developer | 坤宁 毛 | IIASA |
In-app purchases
Formula Box (LaTeX)
No in-app purchases
Donate Water
No in-app purchases
Questions
Is Formula Box (LaTeX) free?
Is Donate Water free?
Do Formula Box (LaTeX) or Donate Water have ads?
Which is updated more often, Formula Box (LaTeX) or Donate Water?
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