Comparison

Two vs Developing Sentence Strips

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

Head to head
About

Two

This app is part of a comprehensive reading and writing curriculum designed for beginning readers and children who struggle with literacy. It focuses on teaching letter sounds within the context of words and modeling the process of blending sounds to form words.

Highlights
  • Teaches letter sounds in context
  • Models sound blending into words
  • Builds essential vocabulary
  • Part of a 14-app curriculum
  • Free and ad-free
Features
Read full description

Center for Innovation in Education Two-Sound Flipbook Description The second of the fourteen apps that comprise the Baratta-Lorton Reading Program. The Reading Program is a reading and writing curriculum for beginning readers and any child who has already experienced difficulty in learning to read. 99% unique – 100% effective - 100% free Background for the fourteen apps The Baratta-Lorton Reading Program also known as Dekodiphukan (pronounced decode if you can) was developed by the Center for Innovation in Education whose many other offerings include Mathematics Their Way, the first non-traditional math curriculum adopted in by the State of California. Dekodiphukan has been in use in classrooms across the United States and Canada since 1985. The Program has been used to teach thousands of children to read and to write regardless of background or supposed lack of reading readiness. To date, no child using the program in a classroom setting has ever failed to learn to read or to write. This Dekodiphukan reading and writing curriculum is now a series of fourteen apps plus a parent-guide for the iPad that, within a period of six months to a year (or occasionally a bit longer for some special needs children), will enable every child using it to read and to write. Reading with enjoyment. Writing creatively. Dekodiphukan is a full fledged curriculum. It is a set of specific learning activities, not a set of games. The curriculum’s fourteen apps are all free with no ads - popup or otherwise - included. While the apps may be downloaded all at once and stored in a folder on the iPad, no more than two or three of the apps are used at any one time by the child. Two-Sound Flipbook The second the Fourteen Apps Three purposes for the Flipbook First, to allow the child to learn the sounds.  Dekodiphukan introduces the sound images and provides the rationale for why each image represents the sound that it does.  However, sounds are learned best in the context of words and not in isolation.  The Flipbook allows the child to hear and learn the sounds in words. Second, to allow the parent-teacher to model for the child the process of blending sounds into words.  Audios are provided to assist the parent in learning the blending process and to permit the child to review the process on his or her own as often as he or she may wish. Third, to insure the child has the vocabulary to proceed independently in the reading program.  If the two sounds the child is blending form a word that he or she does not know, the child has little hope of knowing if his or her blending is correct.  The child learns to blend sounds into words using only words that are a part of his or her vocabulary. Two-Sound Flipbook Used in parallel with the Three-Sound Flipbook Teaches the child the sounds in the context of words Models for the child the blending of sounds into words Gives the child the necessary vocabulary for later activities

About

Developing Sentence Strips

Features
Read full description

As you work with learners to broaden their reading/sight word volcabulary, helping them see the words used in context is an important tool. Buying commercial sentence strips or preparing them in advance can certainly be helpful, but we wanted a way to tap into the context of the moment as we worked with learners. Writing out a sentence and then cutting out each word is time consuming and cumbersome while working one-on-one or in small groups with learners. Our goal for this app was to provide a tool to quickly enter a sentence given by a learner, break that sentence into individual words, and scatter them on the "table" for them to reconstruct their sentence. We also included a way to easily add/remove punctuation and add/delete words one at a time.

Verdict

The call

The clearest difference is update cadence: Developing Sentence Strips at fortnightly against Two's every 36 months. Developing Sentence Strips also leads on iOS requirement (10.0 vs 15.6). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Two ships an update every 36 months, Developing Sentence Strips fortnightly. The most recent releases landed on October 13, 2026 and October 3, 2026 respectively.

Scorecard2 real differences · 7 level
Two versus Developing Sentence Strips: the parameters behind the verdict, then further details
ParameterTwoDeveloping Sentence Strips
PriceFreeFree
Rating4.7 (6 ratings) — better—
Number of ratings6 — better—
Update frequencyEvery 36 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPadiPad
Requires iOS15.610.0 — better
Further details — not scored
Size73 MB30 MB
Age rating4+4+
DeveloperBob Baratta-LortonClassroom Focused Software

In-app purchases

None

Two

No in-app purchases

None

Developing Sentence Strips

No in-app purchases

Questions

Is Two free?
Two is free to download, with no in-app purchases.
Is Developing Sentence Strips free?
Developing Sentence Strips is free to download, with no in-app purchases.
Do Two or Developing Sentence Strips have ads?
Neither Two nor Developing Sentence Strips shows ads.
Which is updated more often, Two or Developing Sentence Strips?
Two ships an update every 36 months, and Developing Sentence Strips fortnightly. Most recently, Two was updated on October 13, 2026 and Developing Sentence Strips on October 3, 2026.

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