Plot Spark vs Tonespin
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Plot Spark
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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: โข Novelists and screenwriters โข Tabletop RPG game masters โข Short story writers โข Game designers โข Gamebook authors โข Anyone who needs a creative spark
Tonespin
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Rewrite any message in the right tone, on your iPhone or iPad. One purchase, no subscription, no account, no word limits. Paste or share text, pick a tone, and get a rewrite you can copy or send. On devices with Apple Intelligence (iOS 26 or later, turned on in Settings), Tonespin uses Apple's on-device language model. On every other device it uses its own deterministic rule engine. Either way your text is rewritten on the device; Tonespin has no server and no account. REWRITE - Six tones: Formal, Casual, Professional, Playful, Concise, Friendly. - Custom tone profiles: start from a tone and choose contractions, filler removal, emoji and punctuation. - Length control from much shorter to much longer, and formats for bullets, numbered steps, email or a short message. - Try again for a different wording, then swap single words in Word Studio. NEW IN 4.0 - Share extension: select text in Mail, Notes, Messages or Safari, tap Share, choose Tonespin, pick a tone and copy the result. - Shortcuts and Siri: "Rewrite Text" and "Rewrite with Preset" actions return the rewritten text to your shortcut. - Saved presets: keep your favorite tone, length and format together and apply them with one tap. - Fact check on every rewrite: numbers, times, prices, links, email addresses and @handles from your original are checked, and anything that changed or went missing is flagged before you send. - Searchable history: every rewrite is kept on the device (you can turn this off), with favorites, "rewrite again" and plain-text export. MESSAGE PACKS Build Professional, Friendly and Concise versions of one message side by side, add exact phrases that must stay, and save or export the comparison. CHECK YOUR WRITING Readability scores, clarity flags (passive voice, hedging, long sentences), text statistics and platform-fit meters for posts and texts. WHAT TO KNOW - The rule engine changes words, contractions, filler and punctuation. It does not restructure sentences the way a language model does. Apple Intelligence rewrites need a supported device with Apple Intelligence turned on. - Tonespin checks exact strings, not facts or meaning. Read every rewrite before you send it. - Nothing is sent automatically. Sharing exports only the text you choose. - The share extension does not save history; open the app for history and presets. iPhone and iPad.
Screenshots
Verdict
The clearest difference is price: Plot Spark at Free against Tonespin's $0.99. Tonespin's advantage is update cadence (every 6 days vs every 2 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Plot Spark is free to download; Tonespin costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Plot Spark ships an update every 2 months, Tonespin every 6 days. Both last shipped on October 31, 2026.
| Parameter | Plot Spark | Tonespin |
|---|---|---|
| Price | Free โ better | $0.99 |
| Update frequency | Every 2 months | Every 6 days โ better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 | 17.0 โ better |
| Further details โ not scored | ||
| Size | 6 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Tobias Reithmeier | Robert Corbin |
In-app purchases
Plot Spark
No in-app purchases
Tonespin
No in-app purchases









