Best Decoder Apps & Games

249+ iOS apps & games curated and reviewed

4.1 avg rating
18 free apps & games
Updated November 2026

From beginner-friendly picks to power-user tools, our decoder list covers 249+ iPhone apps and games updated through November 2026. Compare ratings, prices, and screenshots in one place.

Compare top Decoder Apps & Games (November 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Base64 Encoder DecoderBase64 Encoder DecoderFree5.0★ (4)NoNoOct 2026
2DecoderDecoderFree1.2★ (5)NoNoMay 2026
3ROT13 DecoderROT13 DecoderFree—NoNoAug 2026
4Cryptogram · Cryptoquote GameCryptogram · Cryptoquote GameFree4.7★ (7.2K)YesNoNov 2026
5HCC2D DecoderHCC2D DecoderFree4.0★ (1)NoNoNov 2026
6Ixio DecoderIxio DecoderFree5.0★ (1)NoNoOct 2026
7Sequence DecoderSequence DecoderFree4.6★ (241)NoNoOct 2026
8Resistor DecoderResistor DecoderFree—NoNoJul 2026

Top Picks for Decoder

Decoder#2

Decoder by Edwin Hou

Strong Contender
🎮 Games
1.2(5 ratings)
Free
Decoder screenshot 1

This app assists players in solving the Mastermind logic game. It helps narrow down possible solutions by analyzing your guesses and their scores. Continue inputting your game progress until only one solution remains.

More Decoder apps to explore

FAQ about Decoder

What are the best decoder apps & games for iPhone?
Base64 Encoder Decoder tops our decoder apps & games ranking as of November 2026, with a 5.0-star average from 4 App Store ratings, and it's free to download.
Yes — 18 of the top decoder apps & games we rank are free to download, including Base64 Encoder Decoder and Decoder.
Base64 Encoder Decoder has no ads and has no in-app purchases, according to its App Store listing as of November 2026.
We track 249+ decoder apps & games on the iOS App Store as of November 2026, ranked by rating, recency, and analysis of real user reviews.

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