Conversion Calculator Units vs Spell Check
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Conversion Calculator Units
This app offers a simple and powerful way to convert between over 140 units across 12 categories. Easily switch between units, customize your experience with themes, and share your results.
- Converts over 140 units
- Supports 12 conversion categories
- Customizable themes
- Drag and set unit positions
- Add units to favorites
- Share converted units via email
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* Handy Conversion Calculator App For 12 Categories & 140+ Units * Simple, Powerful & Conversion Calculator app designed for iPhone and iPad! Just tap and convert any units with its clean interface and user-friendly navigation. Simple swipe actions will allow you to convert quickly and change conversion options easily for additional convenience. Download the fastest & easiest to use converter app today! Conversions from one unit to another unit no longer have to be confusing, simply use Best Unit Converter today. * Features: - Ability To Change Themes - Drag & Set Position Of Units - Add Units To Favorites Section - Restore Category Listing - Enable/Disable Units - Set Decimal Digit Count - Share Converted Units by Email ** Conversion (12 Categories & 140+ Units): - Area - Length - Energy - Volume - Weight - Power - Speed - Time - Number - Temperature - Data Storage - Fuel Consumption Conversion Calculator is a beautifully designed universal app, designed for both iPhone & iPad. Get the best easy to use metric and units converter for length, number, power, speed, temperature, time, weight, area, energy, and other popular measurement converters tool. Download free. ************************************************************* * Download Conversion Calculator Today! * * Be Sure To Checkout Other Popular Utilities & Games From RV AppStudios! * *************************************************************
Spell Check
This AI-powered tool enhances your writing by correcting spelling and grammar errors across numerous languages. It offers features like text-to-speech, translation, summarization, and style transformation to refine your content for any audience.
- AI-powered spelling and grammar check
- Text-to-Speech functionality
- Multi-language translation
- Text summarization
- Intelligent text completion
- Style and tone adjustment
- Readability and sentiment analysis
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Fix spelling and grammar in one tap, then make your writing better. SpellWise is an AI writing assistant for emails, essays, messages and posts in 30+ languages. FIX • Instant spelling and grammar check with every correction highlighted • Punctuation, capitalization and word-choice fixes • Works in 30+ languages IMPROVE • Rewrite: more fluent, professional or creative • Humanize: make AI-written text sound natural • Shorten: keep the meaning in fewer words • Simplify: plain language that is easy to read • Expand: continue and develop your ideas SAY IT YOUR WAY • Change tone: friendly, professional, serious, cheerful and more • Change style: formal, casual, academic, creative and more • Email Writer: turn rough notes into a ready-to-send email • Translate into 39 languages UNDERSTAND YOUR TEXT • Readability analysis: see how clear your writing is • Sentiment analysis: check the emotional tone • Summarize long text into key points • Listen to your text with text to speech • History keeps your recent results WHY SPELLWISE • One screen: paste, tap, copy • Clean design with light and dark mode • Get started with free credits SpellWise Premium is an optional auto-renewing subscription that unlocks unlimited checks, every AI tool and an ad-free experience. Payment is charged to your Apple ID at confirmation of purchase. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple ID settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is review sentiment: Conversion Calculator Units at 82% against Spell Check's 35%. Conversion Calculator Units also leads on rating (4.7 vs 4.4) and ratings volume (5K vs 551). On price, update cadence, ads and in-app purchases 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
Both are free to download. Conversion Calculator Units sells 1 one-off in-app purchase and Spell Check sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Conversion Calculator Units holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: Conversion Calculator Units has 5K ratings behind it against 551, so its average is the more settled of the two. Written reviews point the same way: 82% of Conversion Calculator Units's written reviews are positive against 35% of Spell Check's.
Conversion Calculator Units ships an update every 2 months, Spell Check every 6 weeks. The most recent releases landed on November 12, 2026 and November 11, 2026 respectively.
| Parameter | Conversion Calculator Units | Spell Check |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (5K ratings) — better | 4.4 (551 ratings) |
| Positive reviews | 82.1% of reviews — better | 35.3% of reviews |
| Number of ratings | 5K — better | 551 |
| Update frequency | Every 2 months | Every 6 weeks — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 41 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | RV AppStudios LLC | Senol Cagir |
Customer experience
Conversion Calculator Units
Spell Check
Bugs and requests
Conversion Calculator Units
Reported bugs
2 issues- Ads not removed after purchase
- Incorrect unit conversions
Requested features
4 requests- Add pressure conversion units
- Include a basic calculator function
- Implement multi-language support
- Allow customization of unit order
Spell Check
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Conversion Calculator Units
- Remove Ads$1.99
Spell Check
- Pro Subscription Group$1.997 Days
- Pro Subscription Group$4.991 Month
- Pro Subscription Group$34.991 Year
Questions
Is Conversion Calculator Units free?
Is Spell Check free?
Which has better reviews, Conversion Calculator Units or Spell Check?
Do Conversion Calculator Units or Spell Check have ads?
Which is updated more often, Conversion Calculator Units or Spell Check?
Other comparisons
