Comparison

RAYVOLT EIVA 2.0 vs Purl.

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

Head to head
About

RAYVOLT EIVA 2.0

Access and adjust your electric bike's settings directly from your smartphone. Monitor real-time performance data like speed, battery, and assistance levels. Customize advanced parameters to personalize your riding experience.

Highlights
  • Access bike settings
  • Monitor real-time speed
  • View battery status
  • Check amperage
  • Adjust pedal assistance
  • Modify advanced settings
Features
Read full description

With EIVA app you will access to all your bike settings. Please make sure you have turn on bluetooth in your device. Once time you connect you can see following parameters in real time: - Speed. - Battery - Amperage - Pedal assistance level You can adjust your favourite settings on "Advanced settings" section where you can modify "acceleration" , "pedal assistance ratio", "voltage"...etc Join the Rayvolution!

About

Purl.

Features
Read full description

Purl is the ultimate companion for knitters and crocheters. Everything lives locally on your device, with no account, no sign-up, and no ads. All features are completely free, always. PROJECTS • Track what you're making, from planned to finished. • Add yarn, needle or hook size, and the gauge you actually got. • View a timeline of all your projects. • Add progress photos with personal notes. PATTERNS • Keep your own written patterns and imported PDFs in one library. • Open PDF patterns, even very large ones, and pinch to zoom, fully offline. • Draw, highlight, add sticky notes, and drop bookmarks. • Row counters and a chart stitch tracker built for following along. YARN STASH • Log your yarn with color, dye lot, weight, fiber, and gauge. • See your stash totals in meters and grams. • Sort and filter to find the right yarn, and match it to a pattern in your library. HANDY TOOLS • Quick standalone counters for anything you need to count. • Craft calculators for gauge, resizing, shaping, and calculation total skeins needed. • A built-in chart maker: design your own chart from scratch, or let Purl generate them directly from a photo. • A comprehensive knit and crochet glossary in both English and Norwegian. MADE TO FEEL RIGHT • Available in both English and Norwegian. • Switch between light and dark mode. • A two-pane layout on iPad and larger screens. • Easily backup and restore everything to a single file. Purl is completely free, with no locked features. If the app helps you, there is an option to leave a tip on the Support Purl page, but nothing is ever put behind a paywall. And lastly, your data stays yours: it lives exclusively on your device unless you actively choose to export it.

Screenshots

RAYVOLT EIVA 2.01 screens
Purl.4 screens

Verdict

The call

The clearest difference is in-app purchases: RAYVOLT EIVA 2.0 at none against Purl.'s 3. RAYVOLT EIVA 2.0 also leads on iOS requirement (13.6 vs 15.1). On price, update cadence, ads and device support 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

Both are free to download. Purl. sells 3 one-off in-app purchases. RAYVOLT EIVA 2.0 asks for nothing beyond the download.

UpkeepUpdate frequency

RAYVOLT EIVA 2.0 ships an update every 2 weeks, Purl. monthly. The most recent releases landed on October 3, 2026 and October 4, 2026 respectively.

Scorecard2 real differences · 8 level
RAYVOLT EIVA 2.0 versus Purl.: the parameters behind the verdict, then further details
ParameterRAYVOLT EIVA 2.0Purl.
PriceFreeFree
Rating2.8 (4 ratings) — better—
Positive reviews21.4% of reviews—
Number of ratings4 — better—
Update frequencyEvery 2 weeks — betterMonthly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS13.6 — better15.1
Further details — not scored
Size98 MB43 MB
Age rating4+4+
DeveloperExxite Bike S.LPierre Boniface

In-app purchases

None

RAYVOLT EIVA 2.0

No in-app purchases

3 purchases

Purl.

One-time3
  • Buy me a coffee$1.99
  • Buy me a skein$5.99
  • Big thank-you$11.99

Questions

Is RAYVOLT EIVA 2.0 free?
RAYVOLT EIVA 2.0 is free to download, with no in-app purchases.
Is Purl. free?
Purl. is free to download, with in-app purchases available.
Do RAYVOLT EIVA 2.0 or Purl. have ads?
Neither RAYVOLT EIVA 2.0 nor Purl. shows ads.
Which is updated more often, RAYVOLT EIVA 2.0 or Purl.?
RAYVOLT EIVA 2.0 ships an update every 2 weeks, and Purl. monthly. Most recently, RAYVOLT EIVA 2.0 was updated on October 3, 2026 and Purl. on October 4, 2026.

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