Comparison

SolarWriter vs ACRE Mobile

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

Head to head
About

SolarWriter

Transform your e-reader into a portable typewriter for outdoor writing. This app connects your keyboard to your e-reader's screen, allowing you to type comfortably on e-ink displays in bright sunlight. Save and share your work easily.

Highlights
  • E-reader integration
  • External keyboard support
  • Outdoor writing on e-ink screens
  • Text mirroring to e-reader
  • File saving and sharing
  • Detailed setup instructions
Features
Read full description

Traditional screens are fantastic everywhere but outside, especially on a sunny day. E-ink screens work well, but e-readers like the Kindle are difficult to type on and don't support external keyboards. SolarWriter gives you the best of both worlds. SolarWriter runs on your iOS device and acts as a hub between your keyboard and your e-reader. You type on the keyboard, and the text appears on both on the iOS device and on the e-reader's screen (via its web browser). Take advantage of your Kindle's (or other e-reader's) e-ink screen to put your thoughts on paper even outside, with no need to transcribe later. Write at parks, on beaches, in backyards... anywhere you wanted to but couldn't. Save files on your device, or share through email, SMS, and more. Detailed instructions for setup are included inside the app.

About

ACRE Mobile

This tool allows users to manage and update lease records offline, syncing data when connected. It supports tracking lease inspections, communications, and other COR file documentation. Additionally, it records building non-compliance findings for program oversight and best practices.

Highlights
  • Offline record access and updates
  • Lease inspection tracking
  • COR file documentation management
  • Building non-compliance reporting
  • Ad hoc inspection checklists
  • File management and reports
Features
Read full description

The Lease Management Tool/Minor Analysis Review System (LMT/MARS) serves the PBS Office of Facilities Management (OFM) and is available within the ACRE hub's web and mobile applications. The mobile app allows users to access and update records offline using various devices ex: Mobile, iPad, desktop to view synced data when the device is connected. See descriptions below on the functionality found in LMT and MARS: LMT is the official system of record for Lease CORs. Lease CORs use LMT to record, track, and report on programmatic issues that affect building operations in leased properties such as: the Lease Inspection Form, GSA 500; other inspections including ad-hoc and child care inspections; communications; submittals; and all other COR file documentation required to maintain the COR file. MARS records and tracks physical building non-compliance findings to improve overall program oversight, share best practices, and capture lessons learned. The MARS functionality provides Ad hoc Inspection and Checklists, file management, reports, and review of records.

Screenshots

SolarWriter3 screens
ACRE Mobile4 screens

Verdict

The call

The clearest difference is rating: SolarWriter at 3.8 against ACRE Mobile's 1.0. SolarWriter also leads on ratings volume (16 vs 2). ACRE Mobile's advantage is in-app purchases (none vs 1) and update cadence (every 2 months vs every 5 months). On price, 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. SolarWriter sells 1 one-off in-app purchase. ACRE Mobile asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

SolarWriter holds the better App Store score, 3.8 against 1.0. That said, the two scores are not equally well evidenced: SolarWriter has 16 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

SolarWriter ships an update every 5 months, ACRE Mobile every 2 months. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.

Scorecard6 real differences · 4 level
SolarWriter versus ACRE Mobile: the parameters behind the verdict, then further details
ParameterSolarWriterACRE Mobile
PriceFreeFree
Rating3.8 (16 ratings) — better1.0 (2 ratings)
Positive reviews60.0% of reviews—
Number of ratings16 — better2
Update frequencyEvery 5 monthsEvery 2 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.68.0 — better
Further details — not scored
Size92 MB73 MB
Age rating4+4+
DeveloperCool S, LLCU.S. General Services Administration

Customer experience

SolarWriter

All ratings16 ratings
Positive75.0%
Neutral6.3%
Negative18.8%
Written reviews15 reviews
Positive60.0%
Neutral6.7%
Negative33.3%

ACRE Mobile

All ratings2 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

1 purchases

SolarWriter

One-time1
  • SolarWriter Pro$9.99
None

ACRE Mobile

No in-app purchases

Questions

Is SolarWriter free?
SolarWriter is free to download, with in-app purchases available.
Is ACRE Mobile free?
ACRE Mobile is free to download, with no in-app purchases.
Which has better reviews, SolarWriter or ACRE Mobile?
SolarWriter is rated higher. SolarWriter averages 3.8 out of 5 from 16 ratings, while ACRE Mobile averages 1.0 from 2 ratings.
Do SolarWriter or ACRE Mobile have ads?
Neither SolarWriter nor ACRE Mobile shows ads.
Which is updated more often, SolarWriter or ACRE Mobile?
SolarWriter ships an update every 5 months, and ACRE Mobile every 2 months. Most recently, SolarWriter was updated on October 24, 2026 and ACRE Mobile on October 10, 2026.

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