Comparison

Numeral (Numeral Systems) vs Speed Reading

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

Head to head
About

Numeral (Numeral Systems)

Easily convert numbers between various numeral systems, including bases 2-36 and historical systems like Roman and Japanese. Supports floating-point numbers for in-depth conversions.

Highlights
  • Convert between bases 2-36
  • Support for Roman numerals
  • Support for Japanese numerals
  • Support for Greek numerals
  • Floating-point number conversion
  • Converts to historical numeral systems
Features
Read full description

Numeral is an application to convert numbers from one numeral system into another. You can convert numbers with bases between 2 and 36 to numbers of any other base between 2 and 36. You can also convert numbers to a couple country-specific or historical numeral systems, like Roman, Japanese, Greek etc. Numeral does also support floating point numbers when converting numbers from all the bases between 2 and 36. So in case you want to know how PI looks like in the binary numeral system, Numeral will show you the result.

About

Speed Reading

Features
Read full description

Read more in less time. Rive uses RSVP (Rapid Serial Visual Presentation) to show you one word at a time at a pace you choose—so you stay focused, reduce subvocalization, and build real speed-reading habits. READ ANYTHING • Start instantly with eight classic books built in: Moby Dick, The Great Gatsby, Alice's Adventures in Wonderland, Treasure Island, A Tale of Two Cities, The Adventures of Tom Sawyer, Ulysses, and Wuthering Heights • Paste any text—articles, notes, chapters—and start reading in seconds • Import from the web: paste a URL and Rive fetches and extracts the main article text • Share from Safari, Notes, or any app: use the Share sheet and choose Rive to add it to your library (Free includes the eight classics plus your first few imports; Rive Pro unlocks unlimited imports—see below.) SMART RSVP READER • One word at a time, with the optimal recognition point (ORP) highlighted so your eyes land in the right place • Adjust speed from 150 to 900 words per minute with a simple slider—find the pace that fits you • Jump back or forward 10 words anytime; play and pause with one tap • Progress is saved automatically. Pick up exactly where you left off, across all your items TRAIN YOUR SPEED • Find Your Speed — Gradually increases pace so you discover your comfortable reading speed (free) • Two more guided modes—Build Speed and Comfort & Focus—are included with Rive Pro (see below) TRACK YOUR PROGRESS • See total words read, total time read, and your average WPM • Filter stats by today, this week, this month, or all time • Yearly streak calendar shows every day you read or trained—build a habit that sticks RIVE PRO Upgrade to unlock everything: • Unlimited imports — save articles, books, and pasted text without limit • All training modes — Build Speed and Comfort & Focus, alongside Find Your Speed • Reading insights — trend charts for words read, reading speed, and training progress over time (7, 30, and 90-day views) • Support an independent developer building Rive Rive Pro is available as a monthly or yearly auto-renewing subscription, or a one-time lifetime purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period, and can be managed or cancelled anytime in your App Store account settings. DESIGNED TO STAY OUT OF THE WAY • Clean, minimal reader so you focus on the words • Optional accent themes (e.g. blue, green) for the interface and reading highlight • Light and dark mode support Rive is built for anyone who wants to read more without spending more time—whether you're catching up on articles, revisiting classics, or training yourself to read faster and with better focus. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.jamesbtlr.com/rsvp/privacy.html

Screenshots

Numeral (Numeral Systems)2 screens
Speed Reading4 screens

Verdict

The call

The clearest difference is price: Speed Reading at Free against Numeral (Numeral Systems)'s $0.99. Speed Reading also leads on update cadence (every 2 months vs every 26 months). Numeral (Numeral Systems)'s advantage is in-app purchases (none vs 3) and device support (3 vs 1). 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

Speed Reading is free to download; Numeral (Numeral Systems) costs $0.99 up front. Speed Reading sells 3 in-app purchases, starting at $2.99 per month. Numeral (Numeral Systems) asks for nothing beyond the download.

UpkeepUpdate frequency

Numeral (Numeral Systems) ships an update every 26 months, Speed Reading every 2 months. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

Scorecard5 real differences · 5 level
Numeral (Numeral Systems) versus Speed Reading: the parameters behind the verdict, then further details
ParameterNumeral (Numeral Systems)Speed Reading
Price$0.99Free — better
Rating3.4 (5 ratings) — better—
Positive reviews81.8% of reviews—
Number of ratings5 — better—
Update frequencyEvery 26 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better17.6
Further details — not scored
Size1 MB9 MB
Age rating4+4+
DeveloperAlexander ClaussJames Butler

In-app purchases

None

Numeral (Numeral Systems)

No in-app purchases

3 purchases

Speed Reading

Subscriptions2
  • Rive Pro Monthly$2.991 Month
  • Rive Pro Yearly$14.991 Year
One-time1
  • Rive Pro Lifetime$24.99

Questions

Is Numeral (Numeral Systems) free?
Numeral (Numeral Systems) costs $0.99, with no in-app purchases.
Is Speed Reading free?
Speed Reading is free to download, with in-app purchases available.
Do Numeral (Numeral Systems) or Speed Reading have ads?
Neither Numeral (Numeral Systems) nor Speed Reading shows ads.
Which is updated more often, Numeral (Numeral Systems) or Speed Reading?
Numeral (Numeral Systems) ships an update every 26 months, and Speed Reading every 2 months. Most recently, Numeral (Numeral Systems) was updated on November 6, 2026 and Speed Reading on October 31, 2026.

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