Comparison

双键 vs Rectfly

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

Head to head
About

双键

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双键(DualKey)是一款可全系统使用的双拼输入法键盘:离线候选、直观键位提示与单手操作,在任意 App 中长按地球键即可切换使用。 【双拼键盘】 • 全局可用:任意 App 中长按地球键切换到双键 • 离线候选:内置 32 万条现代离线词库(最长 8 字短语),连续输入、组词与选词联想,全程无网络、零上传 • 键位提示:每个键实时显示当前方案的声母/韵母,可整体关闭;输入首键后无法组合的键位变灰 • 单手模式:面板收窄靠左/靠右,三档可调,单拇指覆盖全部按键 • 键盘皮肤:夜航、青瓷、极光等十余套皮肤,键帽材质与点击反馈一起切换 • 智能输入:shift 大小写、空格首选、回车跟随场景、数字符号页、删除重编辑、空格长按移动光标 【隐私与权限】 • 完全离线:无网络请求、无统计 SDK、零数据收集 • 零权限可用:双拼输入、候选、联想、皮肤、触感均无需「允许完全访问」;仅可选键盘音需要 【内置练习系统】 键盘自带训练:弱项检测与智能出题(错误率×频次×新近度 + 间隔复习)、键位热力图、反应时长趋势、长文实战连击挑战、双拼打砖块测试,桌面 Widget 显示连续天数与待补弱项。练习与键盘共用同一份方案数据——练的,就是你打的。 【方案与解锁】 • 小鹤双拼:永久免费 • 微软双拼 / 搜狗双拼:一次性买断,键盘与练习通用,支持恢复购买 汉字 → 拼音 → 双拼编码 → 键位,双键帮你把这层输入习惯带进每一次打字。

About

Rectfly

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Rectfly is a Chinese pinyin keyboard that fixes your typos. Hit a nearby key, miss one or press an extra one, and you still get the word you meant. It can fix a whole sentence at once. Layouts • Full Pinyin • Shuangpin: Xiaohe (Flypy), Ziranma, Microsoft, Sogou, Ziguang, Intelligent ABC, Pinyin Jiajia and GB • Every layout corrects typos Features • Simplified and Traditional Chinese (Taiwan, Hong Kong), plus English with correction and completion • Learns your words, and you can view or delete them • Import Sogou, Rime and Gboard dictionaries, iPhone Text Replacements and names from Contacts • Clipboard that recognizes codes, phone numbers and links • Custom phrases, dates and times, emoji • Themes, accent colors, a background photo and adjustable keyboard size Privacy • The keyboard does not use the network. Correction and learning stay on your iPhone. • No ads, no account. Requires iOS 26 or later.

Screenshots

双键4 screens
Rectfly4 screens

Verdict

The call

The clearest difference is in-app purchases: Rectfly at none against 双键's 2. 双键's advantage is iOS requirement (17.0 vs 26.0). On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. 双键 sells 2 one-off in-app purchases. Rectfly asks for nothing beyond the download.

UpkeepUpdate frequency

双键 ships an update every 3 days, Rectfly every 2 days. Both last shipped on November 13, 2026.

Scorecard2 real differences · 4 level
双键 versus Rectfly: the parameters behind the verdict, then further details
Parameter双键Rectfly
PriceFreeFree
Update frequencyEvery 3 daysEvery 2 days — better
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPad — betteriPhone
Requires iOS17.0 — better26.0
Further details — not scored
Size30 MB56 MB
Age rating4+4+
Developer云龙 朱YUCHEN LIU

In-app purchases

2 purchases

双键

One-time2
  • 微软双拼$1.99
  • 搜狗双拼$1.99
None

Rectfly

No in-app purchases

Questions

Is 双键 free?
双键 is free to download, with in-app purchases available.
Is Rectfly free?
Rectfly is free to download, with no in-app purchases.
Do 双键 or Rectfly have ads?
Neither 双键 nor Rectfly shows ads.
Which is updated more often, 双键 or Rectfly?
双键 ships an update every 3 days, and Rectfly every 2 days. Most recently, 双键 was updated on November 13, 2026 and Rectfly on November 13, 2026.

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