Comparison

Geekmath Classic vs DelayLens

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

Head to head
About

Geekmath Classic

Features
Read full description

GeekMath Classic 终身版 像思维一样计算,探索关联计算的奇妙魅力 每一个计算元素过程都可以快速修改和定义,提升计算效率 真正适合全平台的计算器解决方案 Geekmath Classic iCloud 多设备实时同步 尝试过 Geekmath Classic ,它将会成为你不可或缺的计算工具 核心特性 跨行联动运算 元素链接 对象标注 iCloud 同步 全平台支持 可自定义样式 终身使用 免登陆且无任何使用时间限制 多语言特性 Multi-Language GeekMath 全面支持多种语言,包括简体中文、English、日本语、法语等 可切换工作区 WorkSpace (高级订阅) 四个可随时切换的工作区,并支持跨设备上传下载,苹果设备支持 iCloud 同步 每个工作区可以独立修改标题和算法,并可预览内容 算法标题 MethodTitle 在 Geekmath Classic 中,我们引入了算法标题功能,可以快速定义算法名称 实时预览 RealtimeResult 在新的 Geekmath Classic 中,我们提供了更强的计算联动引擎,无需输入等号=,只要有计算内容就能直接显示结果,快速响应计算需求 计算单元 MathUnit Geekmath Classic 中更新了强大的 MathUnit 计算单元,支持对数、平方根、指数、自由指数、自由底数、分数、百分数、三角函数、角度等快捷编辑和运算,大幅提升联动运算的可靠性 科学记数法 Scientific Notation 支持可自定义小数保留位数的科学记数法和千分位记数法,满足不同用户需求 快速换行 QuickReturn 当输入焦点处于计算结果时,等号将自动转换为换行符,便于快速换行 计算结果个性化 UserRes (Beta) 用户可手动将计算结果切换为目标显示类型 快捷计算 UserRes (Beta) 用户可手动将计算结果切换为目标显示类型 折叠屏/平板自由窗口 PadSupport 支持原生 iPadOS 分屏,各品牌折叠屏大屏模式,iPad 台前调度窗口任意大小,侧边小窗等功能 五档内容大小 5-Level Content-Size Geekmath Classic 用户可自由调节内容大小,适配不同设备,获取最佳用户体验 快捷样式 QuickStyle 快速调节保留位数、内容大小及深色模式 可定义字体 UserFont (高级订阅) 可根据喜好改变计算器的内容字体 键盘布局 KeyLayout 可根据使用习惯改变计算器布局 震动/按键音反馈 React Native 提供三种震动反馈和按键音,提升触摸屏设备的使用体验 自适应深色模式 NightMode 移动设备上提供更好的深色模式体验,可跟随系统深色模式切换,并可跟随账户设置保存用户喜好 Apple 设备独占的 iCloud 实时同步功能 全新上架 Apple Store,支持 iPhone,同时为所有 iPadOS/MacOS 设备带来全功能支持 iCloud 设备实时同步 (高级订阅) 通过 iCloud 实时同步,所有运行 Geekmath Classic 的苹果设备,包括 iPhone、iPad、Mac、VisionPro 等,都能开启全时同步。计算会实时同步到所有登录相同 GeekMath 账号和 iCloud 账号的设备上,自动锁定焦点,方便在任意设备上继续计算。计算空间的选择和编辑也会实时同步到所有设备。通过 Geekmath Classic 的算法存档 CloudMethod 和可切换工作区 WorkSpace,手动同步其他端的 Geekmath Classic 上 iPadOS 原生台前调度 支持原生 iPadOS 分屏、台前调度窗口任意大小、侧边小窗等功能

About

DelayLens

This app helps you recover from procrastination by logging the experience, identifying causes, and guiding you to take one small next step. It offers focused work sessions and provides insights into what helps you restart.

Highlights
  • Log procrastination time
  • Identify causes and add notes
  • Define small next actions
  • Set focus sessions (5, 15, 25 min)
  • Review daily and weekly trends
  • Gain insights into method effectiveness
Features
Read full description

Procrastinated? You can still restart. DelayLens is a gentle tool for the moment after you realize you got stuck. Instead of asking you to become perfectly disciplined, it helps you record what happened, name the cause, choose the smallest next action, and return to focused work. It is not a generic Pomodoro timer, to-do list, or habit tracker. DelayLens is built around one clear recovery loop: record → understand → take one small step → focus → learn from what helped. HOW IT WORKS 1. Record the procrastination Start a log when you notice you are putting something off. End it when you are ready to come back, so the time that actually passed is captured. 2. Name what got in the way Choose a reason, add a task category, and leave a note if useful. A task may feel too large, the first step may be unclear, or you may be tired or distracted. Recording the cause turns a vague feeling into something you can review. 3. Choose one small next action Replace “finish the report” with “open the document and write the title.” Make the next move specific enough to begin. 4. Choose a restart method and focus length Pick a restart method that fits the moment, then focus on the next action for 5, 15, or 25 minutes. When it ends, decide what comes next. 5. Learn what helps you restart Review procrastination time, causes, restart methods, completion, and your own feedback. Over time, DelayLens can compare which methods are associated with more completed actions and provide method-based insights and personalized suggestions from your records. WHAT DELAYLENS HELPS YOU DO • Log procrastination time as it happens • Record reasons, categories, and notes • Turn a stuck task into a small next action • Follow small steps during a 5, 15, or 25 minute focus session • Use different restart methods and keep a record of what you tried • Review daily and weekly trends • Bring today’s procrastination and focus together in a daily reflection • Leave feedback on what helped • See method effectiveness and personalized suggestions based on your records • See the link between a procrastination log and the focused action that followed FREE AND PRO The free experience helps you complete the restart in front of you: log the episode, understand the cause, choose a next action, focus, and review today or this week. DelayLens Pro adds longer-range views and deeper pattern insights, including method effectiveness and personalized suggestions based on your recorded completion and feedback patterns. MADE FOR REAL-LIFE STARTING TROUBLE DelayLens can help when: • You know you should study but have not opened the material • A work task feels too large to begin • You are tired but still want to move forward a little • The same kind of procrastination keeps returning DelayLens does not promise to eliminate procrastination or complete your work for you. It gives you a calmer way to acknowledge what happened and begin again. Start with one small action. Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Geekmath Classic4 screens
DelayLens4 screens

Verdict

The call

The clearest difference is price: DelayLens at Free against Geekmath Classic's $2.99. Geekmath Classic's advantage is in-app purchases (none vs 3) and update cadence (daily vs every 3 weeks). On ads 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

DelayLens is free to download; Geekmath Classic costs $2.99 up front. DelayLens sells 3 in-app purchases, starting at $1.99 per month. Geekmath Classic asks for nothing beyond the download.

UpkeepUpdate frequency

Geekmath Classic ships an update daily, DelayLens every 3 weeks. The most recent releases landed on September 22, 2026 and September 12, 2026 respectively.

Scorecard5 real differences · 4 level
Geekmath Classic versus DelayLens: the parameters behind the verdict, then further details
ParameterGeekmath ClassicDelayLens
Price$2.99Free — better
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyDaily — betterEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad
Requires iOS14.0 — better17.0
Further details — not scored
Size27 MB14 MB
Age rating17+4+
DeveloperJian Chen子莹 李

In-app purchases

None

Geekmath Classic

No in-app purchases

3 purchases

DelayLens

Subscriptions2
  • DelayLens Pro Monthly7 Days trial$1.991 Month
  • DelayLens Pro Yearly$9.991 Year
One-time1
  • DelayLens Founder Lifetime$19.99

Questions

Is Geekmath Classic free?
Geekmath Classic costs $2.99, with no in-app purchases.
Is DelayLens free?
DelayLens is free to download, with in-app purchases available.
Do Geekmath Classic or DelayLens have ads?
Neither Geekmath Classic nor DelayLens shows ads.
Which is updated more often, Geekmath Classic or DelayLens?
Geekmath Classic ships an update daily, and DelayLens every 3 weeks. Most recently, Geekmath Classic was updated on September 22, 2026 and DelayLens on September 12, 2026.

Other comparisons