Comparison

1Lens vs Plot Spark

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

Head to head
About

1Lens

Features
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1Lens is a metacognition practice and reflection tool. Choose a mental model you want to work on, record your decisions and actions in everyday situations, and look back on what changed. β€’ Practice mental models: Start with built-in models such as First Principles, Win-Win Thinking, and Growth Mindset, or create your own. Keep up to three models active to stay focused. β€’ Record wins and misses: Note what went well or where you fell short. Make a specific β€œIf…then…” plan for your next attempt. β€’ Reflect with voice: Record your thoughts and, when supported by the device, transcribe them with Apple’s system speech recognition. Recordings, transcripts, and practice entries stay on your device. β€’ Review your progress: Browse recent daily entries and reflection history, and use your practice streak to notice your rhythm. β€’ Make it yours: Edit or archive models, then reactivate them from the full list whenever you are ready. Optional reminders can help you build a routine. Take a moment to notice how you think, then choose what to do next. Microphone access is used to record voice reflections. Speech recognition access is used for on-device transcription. Recording starts only when you choose to begin.

About

Plot Spark

Features
Read full description

Plot Spark ignites your next idea - with a single roll. Whether you're working on a novel, a short film, a tabletop RPG campaign, or just need a story for tonight: Plot Spark instantly delivers a character, a conflict, and a setting - random, unexpected, and inspiring. HOW IT WORKS Pick a kit, roll the dice - and get a complete story prompt with character, conflict, setting, and a wild twist. Sounds too simple? That's exactly the point. Prefer instant results over a dice animation? Turn the roll animation off and get straight to the prompt. ELEVEN KITS, EVERY GENRE Plot Spark ships with eleven curated kits - from neon-soaked noir and cosmic comedy to high-seas adventure, Cold War espionage, and Victorian hollow-earth expeditions. And you can create your own kits and fill every slot with your own ideas - tuned to exactly the tone you need. JOURNAL & MARKDOWN EXPORT Save every hit straight to your journal. Write notes, develop the idea, or let it simmer - your best prompts won't get lost. Export any entry, or your whole journal, as clean Markdown and keep working in your favorite writing app. FROM SPARK TO GAMEBOOK Your exported prompts are plain Markdown - the same format Story Weaver speaks, our free open-source language for writing branching gamebooks with choices, dice, and fights. Grow a rolled prompt into a full playable adventure: github.com/ComicSans/story-weaver NO SUBSCRIPTION. NO ACCOUNT. Plot Spark needs no internet connection, no login, and no subscription. Your ideas stay on your device. Perfect for: β€’ Novelists and screenwriters β€’ Tabletop RPG game masters β€’ Short story writers β€’ Game designers β€’ Gamebook authors β€’ Anyone who needs a creative spark

Screenshots

1Lens4 screens
Plot Spark3 screens

Verdict

The call

The clearest difference is update cadence: 1Lens at daily against Plot Spark's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

1Lens ships an update daily, Plot Spark every 2 months. The most recent releases landed on October 15, 2026 and October 16, 2026 respectively.

Scorecard1 real difference Β· 5 level
1Lens versus Plot Spark: the parameters behind the verdict, then further details
Parameter1LensPlot Spark
PriceFreeFree
Update frequencyDaily β€” betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
DevicesiPhoneiPhone, iPad β€” better
Requires iOS17.1 β€” better18.0
Further details β€” not scored
Size2 MB6 MB
Age rating4+4+
Developerε‡δΌŸ 朱Tobias Reithmeier

In-app purchases

None

1Lens

No in-app purchases

None

Plot Spark

No in-app purchases

Questions

Is 1Lens free?
1Lens is free to download, with no in-app purchases.
Is Plot Spark free?
Plot Spark is free to download, with no in-app purchases.
Do 1Lens or Plot Spark have ads?
Neither 1Lens nor Plot Spark shows ads.
Which is updated more often, 1Lens or Plot Spark?
1Lens ships an update daily, and Plot Spark every 2 months. Most recently, 1Lens was updated on October 15, 2026 and Plot Spark on October 16, 2026.

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