Science Tools vs Encode Keyboard
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Science Tools
Explore interactive science experiments with hands-on controls and instant visuals. Ideal for students and teachers, it covers topics like optics and orbital mechanics. An optional Pro upgrade unlocks all features and future content.
- Interactive science experiments
- Hands-on controls
- Instant visual feedback
- Offline functionality
- Classroom demonstration tool
- Self-study resource
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Science Tools is an interactive experiment box for students, teachers, and science lovers. Explore double-slit interference, double pendulum chaos, optics, orbital mechanics and more with hands-on controls and instant visuals. Works offline and is perfect for class demos and self-study. Upgrade to Pro to unlock all tools and future content.
Encode Keyboard
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Encode Keyboard lets you encode and decode text in the app or directly from a custom iOS keyboard. TYPE, CONVERT, CONTINUE • Type in a supported text field, choose Encode or Decode, then select a codec • Tap Convert to replace the current line before the cursor • Undo the last conversion instantly • Switch between English and Vietnamese input TWELVE FORMATS, HONEST LABELS • RFC 4648 Base64, Base64URL, Base32, and Base16/Hex • RFC 3986 URL Percent and International Morse • UTF-8 Binary as an educational app profile; ROT13 as a classic convention • Emoji, Kaomoji, Leetspeak, and your own Personal Code for expression CREATE AND LEARN IN THE APP • Convert text with one clear direction-and-codec flow • Copy, share, or save a result; revisit favorites and recent history • Learn all 12 formats with specification sources, canonical examples, practice, and quick checks • Create, import, and export custom Emoji mappings and Personal Codebooks PRIVATE BY DESIGN All transformations run on device. No account or Full Access is required. There are no ads, analytics, or subscriptions. The keyboard has no network access and does not collect what you type. IMPORTANT Encoding is not encryption. Do not use these formats to protect passwords or sensitive information. Byte-based standard formats, Binary, and ROT13 can restore valid text exactly. Morse may normalize accents, case, and spacing. Emoji, Kaomoji, Leetspeak, and Personal Code are approximate or require the same codebook. Third-party keyboards are unavailable in secure text fields and some app-specific fields because of iOS restrictions.
Screenshots
Verdict
The clearest difference is in-app purchases: Encode Keyboard at none against Science Tools's 1. Encode Keyboard also leads on update cadence (fortnightly vs every 5 weeks). Science Tools's advantage is iOS requirement (16.0 vs 18.0). On price, ads 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. Science Tools sells 1 one-off in-app purchase. Encode Keyboard asks for nothing beyond the download.
Science Tools ships an update every 5 weeks, Encode Keyboard fortnightly. The most recent releases landed on October 24, 2026 and October 12, 2026 respectively.
| Parameter | Science Tools | Encode Keyboard |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 5 weeks | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 77 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | 丽东 陈 | Dat Thanh Nguyen |
In-app purchases
Science Tools
- be_pro$2.99
Encode Keyboard
No in-app purchases









