ERSB Lite vs Otsimo | Special Education 1+
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ERSB Lite
This app builds early reading skills for students progressing from foundational literacy. It uses systematic instruction and assessments to help individuals read independently, proving effective for those with intellectual disabilities and autism.
- Early literacy skill development
- Systematic instruction
- Ongoing assessments
- Progress to 2nd-grade reading level
- Effective for intellectual disabilities
- Effective for autism
Read full descriptionHide full description
Note: This is the Free version of ERSB. Level 1 with 5 lessons is Free! The rest of the levels are available through the in-app store. Early Reading Skills Builder™(ERSB) curriculum, based on a multi-year research project from the University of North Carolina at Charlotte, is a stepping stone for graduates of Attainment’s ELSB Curriculum. ERSB takes students who mastered these early literacy skills to a 2nd grade reading level. It incorporates systematic instruction and ongoing assessments to teach students to read independently. It’s been proven effective for students with moderate to severe intellectual disability and/or autism, including those with complex communication needs.
Otsimo | Special Education 1+
This app offers certified educational games and social stories designed for individuals with learning disorders, attention deficits, and autism. It helps develop cognitive, communication, and motor skills through personalized learning paths and customizable settings.
- Personalized learning path
- Customizable game settings
- Detailed progress reports
- Social stories
- Vocabulary and numbers games
- No ads in premium version
Read full descriptionHide full description
Featured for over 300 days! Otsimo is a certified and award-winning educational game application developed for individuals diagnosed with learning disorders, attention deficit disorders, autism, Down syndrome, Aspergers, and other special needs. Otsimo Special Education has been awarded Mom's Choice Awards, Parent's Pick Awards, Education Alliance Finland, the Academics’ Choice Mind-Building Media and Toys Award, and was selected for the HundredED Global Collection of 2020, 2021, and 2022. It has been chosen as the BEST autism app by many autism publications. Parents LOVE Otsimo Special Education! Created under the guidance of parents, psychologists, and special education teachers; assistive games in Otsimo teach fundamental education and concepts that develop cognitive, communication, and motor skills with well-researched methods. Here are just some of the categories found in the app: Social stories, Numbers and letters, Vocabulary and words, Emotions and feelings, Colors, Music and singing, Animals and environment, Vehicles and SO MUCH MORE! With the help of visual and auditory cues, Otsimo Special Education helps users improve their motor and cognitive skills by helping them match, draw, choose, and put items in order. Why should you try Otsimo Special Education at home? Learning path: The perfect feature to provide the most personalized experience. It provides a specific curriculum to the individuals’ special education and learning therapy needs. Depending on the individuals’ learning and playing progress, the Learning Path adjusts the difficulty and special education content. Customizability: All of the learning game and difficulty settings are completely customizable for you to adjust. No ads, ever: Otsimo Special Education follows a strict no-ads policy, preventing any kind of intrusion and unwanted disturbance. Detailed progress reports: Access detailed reports that give insight into the performance and progress. The games individuals have played, special education progress, and the skills they have been working on will all be in this report! It can be used by individuals that have developmental or learning disorders such as Autism spectrum disorder, Down syndrome, Asperger’s, ADHD, cerebral palsy, amyotrophic lateral sclerosis, motor neuron disease (MND), speech impediments, and aphasia. Otsimo Premium Otsimo offers a variety of games for free but you can always upgrade to premium to access more educational games and features! Otsimo Premium offers: Access to all 100+ educational games Regular content update A personalized curriculum Daily and weekly report cards on tha games played and to track the progress Cross-platform support Multiple user feature Social storybooks with visual and auditory cues Play offline anytime anywhere For Otsimo Premium, we offer the following subscriptions: 1 month from $20.99 1 year from $13.75/monthly Lifetime from $229.99 If you upgrade to Otsimo Premium, payment will be charged to your App Store account at the confirmation of purchase. Subscriptions automatically renew unless auto-renew is turned off or subscription is cancelled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours of the end of the current period, and the cost of the renewal will be provided. Subscriptions can only be managed by the user. Auto-renewal can be turned off by going to the user’s Subscription Settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication. For more information: Privacy Policy & Terms of Use - https://otsimo.com/legal/privacy-en.html Payment Policy - https://otsimo.com/legal/payment.html
Screenshots
Verdict
The clearest difference is review sentiment: Otsimo | Special Education 1+ at 45% against ERSB Lite's 0%. Otsimo | Special Education 1+ also leads on ratings volume (637 vs 3) and rating (4.3 vs 4.0). ERSB Lite's advantage is ads (none vs shown). On price, update cadence, in-app purchases and monetization model 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. ERSB Lite sells 5 one-off in-app purchases and Otsimo | Special Education 1+ sells 10 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.
Otsimo | Special Education 1+ holds the better App Store score, 4.3 against 4.0. That said, the two scores are not equally well evidenced: Otsimo | Special Education 1+ has 637 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 0% of ERSB Lite's written reviews are positive against 45% of Otsimo | Special Education 1+'s.
ERSB Lite ships an update every 2 months, Otsimo | Special Education 1+ monthly. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.
| Parameter | ERSB Lite | Otsimo | Special Education 1+ |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (3 ratings) | 4.3 (637 ratings) — better |
| Positive reviews | 0.0% of reviews | 45.2% of reviews — better |
| Number of ratings | 3 | 637 — better |
| Update frequency | Every 2 months | Monthly — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 253 MB | 133 MB |
| Age rating | 4+ | 4+ |
| Developer | Attainment Company | Otsimo |
Customer experience
ERSB Lite
Otsimo | Special Education 1+
Bugs and requests
ERSB Lite
Not enough reviews yet to summarise bugs or requests.
Otsimo | Special Education 1+
Reported bugs
4 issues- Sound not working
- Games freezing or losing functionality
- Login issues
- Incorrect content or visuals
Requested features
4 requests- More language options
- Offline mode
- Additional game content and updates
- Ability to try before paying
In-app purchases
ERSB Lite
- Levels 12-16$29.99
- Levels 17-21$29.99
- Levels 22-26$29.99
Show 2 moreShow fewer
- Levels 2-6$29.99
- Levels 7-11$29.99
Otsimo | Special Education 1+
- Discounted Premium (Monthly)$9.991 Month
- Monthly Subscription$9.991 Month
- Otsimo Monthly Subscription$13.991 Month
Show 6 moreShow fewer
- Monthly Subscription$20.991 Month
- Special Premium$59.991 Year
- Special Premium$83.991 Year
- Special Premium$95.991 Year
- Discounted Premium (Annual)7 Days trial$119.991 Year
- Otsimo Annual Subscription7 Days trial$164.991 Year
- Otsimo Lifetime Premium$229.99
Questions
Is ERSB Lite free?
Is Otsimo | Special Education 1+ free?
Which has better reviews, ERSB Lite or Otsimo | Special Education 1+?
Do ERSB Lite or Otsimo | Special Education 1+ have ads?
Which is updated more often, ERSB Lite or Otsimo | Special Education 1+?
Other comparisons















